How secure was the USSR's control over Eastern Europe?

Cambridge IGCSE History 0470 · Paper 1 Section A, Core Content Option B Syllabus: 2027 and 2028 Option B: The twentieth century: international relations since 1919 Key Question 6 of six

This file covers the last of the six Core Content Key Questions in Option B: the forty years between the moment the USSR finished taking control of Eastern Europe and the moment that control ended. If you are looking for how the USSR got that control, or for who started the Cold War, you are in the wrong file: that is Key Question 4. If you are looking for Korea, Cuba or Vietnam, that is Key Question 5. Section 2 draws the lines precisely, because these three Key Questions overlap more than any other trio in the course.

The whole question is in the word secure. A file that only tells you what happened in Hungary, Berlin, Prague and Gdansk cannot get you above Level 3, because the crises on their own are a narrative, and the question asks for a verdict. Everything below is arranged so that each crisis arrives already attached to both of the arguments it can serve: that Soviet control held for four decades, and that it was challenged again and again until it broke.

1. What the syllabus actually asks

This is the wording printed in the Cambridge IGCSE History 0470 syllabus for 2027 and 2028. Learn the Key Question itself, because examiners build 10 mark questions straight out of it, and in this case they have built them out of the exact phrase.

Key Question 6

How secure was the USSR's control over Eastern Europe, 1948 to c.1989?

The syllabus prints that date range as a dashed span, "1948" and "c.1989" joined by a dash. It is written out in words here, and everywhere below, to keep the notes consistent.

Focus points

• Why was there opposition to Soviet control in Hungary in 1956 and Czechoslovakia in 1968, and how did the USSR react to this opposition?
• How similar were events in Hungary in 1956 and in Czechoslovakia in 1968?
• Why was the Berlin Wall built in 1961?
• What was the significance of Solidarity in Poland for the decline of Soviet influence in Eastern Europe?
• How far was Gorbachev personally responsible for the collapse of Soviet control over Eastern Europe?

Specified content

• Soviet power in Eastern Europe:
• resistance to Soviet power in Hungary (1956) and Czechoslovakia (1968)
• the Berlin Wall
• Solidarity in Poland
• Gorbachev and the collapse of Soviet control over Eastern Europe

Five focus points and four items of specified content. That is the whole of it. Note what is not there: no Yalta, no Potsdam, no Marshall Plan, no Warsaw Pact, no Korea. Those belong to the neighbours.

The dates, and what the "c." lets you do

The title carries a date range, and it is the only Key Question in Option B whose title does. That is deliberate, and both ends of it matter.

1948 is a hard start. It is the year Key Question 4 stops: that Key Question's second focus point is "How had the USSR gained control of Eastern Europe by 1948?". So the acquisition of control is Key Question 4's business and the security of it afterwards is yours. In practice examiners do let 1948 breathe a little, because you cannot judge how secure control was without saying what it consisted of, but a question that says "from 1948" is marked from 1948.

c.1989 is a soft end, and the "c." is doing real work. "Circa" means the endpoint is approximate, so events that spill past 1989 into 1990 are inside the syllabus rather than outside it. This is not a guess. A June 2024 paper set a 4 mark question reading "Describe events in Eastern Europe in 1989 to 1990", and its mark scheme credits "In 1990 the Baltic republics declare independence from the USSR" and "Germany becomes united in 1990". So the reunification of Germany and the break-up of the Soviet bloc into 1990 are creditable here.

What the "c." does not do is licence you to ignore a date band printed inside an individual question. When a question says "from 1948 to 1961" or "from 1960 to 1980", that band overrides the syllabus range completely, and section 12 shows how much this costs candidates every series.

A note on the syllabus wording

The syllabus prints the option title two ways. The contents page and the subject content introduction both call it The twentieth century: international relations since 1919, while the header on the Option B content page reads from 1919. They mean the same thing. Use "since 1919".

The focus points are five essay titles, not five topics

Cambridge defines its own three layers: key questions define the over-arching issues, focus points identify the issues that enable candidates to gain an understanding of the key question, and specified content provides guidance on what needs to be studied.

So each focus point is effectively a ready-made 10 mark question, and four of the five have been set as one, more or less verbatim, in the papers read for these notes.

2. Where this Key Question stops, and where the neighbours start

Key Questions 4, 5 and 6 all sit in the Cold War, and candidates lose marks wandering between them every series. The syllabus draws the lines cleanly, so learn them.

Berlin is claimed by two Key Questions, and they split on a date

This is the single most useful boundary on the paper, and it is worth memorising as a sentence: the Blockade is Key Question 4, the Wall is Key Question 6.

The syllabus gives the Berlin Blockade of 1948 to 1949 to Key Question 4, where it sits under "the occupation of Germany and the Berlin Blockade" and has its own focus point, "What were the consequences of the Berlin Blockade?". The syllabus gives the Berlin Wall of 1961 to Key Question 6, where it is both a focus point and an item of specified content. Key Question 5 has no claim on Berlin at all: containment is examined only through Korea, Cuba and Vietnam.

Examiners flag the confusion between them in report after report, on both sides. Answering a Wall question with Blockade material earns nothing, and answering a Blockade question with Wall material earns nothing. Section 12 gives the exact wording they use.

The Warsaw Pact is the other trap. Its formation in 1955 is Key Question 4 specified content, so a question asking why it was formed is not yours. But what Hungary threatened to do to it in 1956 is squarely yours, because that threat is the reason the tanks came back. Use the Pact as the thing being defended, not as a topic in its own right.

3. How Paper 1 sets this Key Question

The ladders, the assessment objective split and the two rules Cambridge changed for the 2024 series are the same for every question on the paper and are set out in the How Cambridge marks History 0470 Paper 1 notes. Read that page once. Nothing below repeats it. What follows is only what is true of this Key Question.

It is Question 8. Of the 48 Paper 1 mark schemes read for these notes, covering the 2018 to 2024 series across all three variants and all three sittings, 23 set a question on this Key Question. Eighteen of those 23 were Question 8 and five were Question 7.

The pattern tightens sharply at the end of that run. Until the 2023 series, Option B carried an extra Key Question on the Gulf, which took up one of the four Option B slots and pushed this Key Question around between Question 7 and Question 8. From the 2024 series that Gulf content is gone and Option B has exactly six Key Questions and four questions on the paper. In the seven Paper 1 mark schemes from the 2024 series, Question 5 and Question 6 are always drawn from Key Questions 1 to 3, and Question 7 and Question 8 from Key Questions 4 to 6, exactly as the syllabus promises. This Key Question appeared in six of those seven papers, and in all six it was Question 8.

It is the most reliably set of the three late Key Questions. Because two questions must come from Key Questions 4 to 6, one of the three is left out of every paper. In the 2024 series it was this one only once, in the March sitting.

It is worth marks on Paper 2 as well. Paper 2 sets one document question on a prescribed topic drawn from the Core content, and the prescribed topic changes each series. For 2027, this Key Question is the announced Option B prescribed topic for the June exam. It has served that role before: the June 2022 Paper 2 set all three variants on Poland in 1980 to 1981, under titles including "Could the Soviet Union rely on the Polish authorities to deal with the protests and strikes in 1980 to 1981?" and "How far was Jaruzelski in control in Poland in 1981?"; the March 2024 Paper 2 asked "Was there a real possibility that the Soviet Union would invade Poland in 1980 to 1981?"; and the November 2023 Paper 2 set "Why did the Soviets use military force in Hungary in November 1956?" and two versions on the Berlin Wall. Paper 2 wants the same content used in an entirely different way, so do not assume the revision transfers untouched.

4. The frame: what "how secure" actually asks

Before any of the crises, fix the shape of the argument, because every 10 mark question in this Key Question is a version of it.

The case that control was secure. For forty years no country left the Soviet bloc. Every challenge was defeated, in most cases within days. The USSR had an army in place, a treaty binding the satellites' forces under Soviet command, and a demonstrated willingness to use both. The West protested and did nothing. When Hungary rose, the Red Army returned and a Soviet-approved government was installed. When Czechoslovakia reformed, Warsaw Pact tanks reversed the reforms and the leader who made them ended up a clerk. When Poland organised, the Polish government itself did the crushing and the USSR did not even have to move. Control survived every test it was given.

The case that control was insecure. A grip that has to be re-imposed by tanks in 1956, walled in with concrete in 1961, re-imposed by tanks again in 1968, written into an explicit doctrine of intervention, and then held up by martial law in 1981 is not a secure grip. It is a grip that keeps slipping. Cambridge's own mark schemes make this argument for you: Soviet military intervention "made clear that communist regimes only managed to exist because of Soviet force", and "the Soviet use of force did not solve the underlying problems of the communist regimes". The regimes stayed unpopular. Living standards stayed below the West's. And the fact that a wall had to be built at all is evidence that the system could not hold its own people.

1. the USSR wins every individual crisis
2. but each win requires force or a barrier
3. force removes the symptom and not the discontent
4. the discontent returns in the next country
5. so the record of unbroken success is also a record of unbroken failure to make control self-sustaining.

That chain is the argument of this whole Key Question, and it is the reason a Level 5 judgement here is usually not "secure" or "insecure" but a distinction between the two: secure in power and insecure in consent, or secure while the USSR was willing to pay for it and no longer than that.

Period by period, so you can answer a question with a date band in it:

5. Focus point: opposition in Hungary and Czechoslovakia, and how the USSR reacted

This is the longest focus point and it carries two of the four items of specified content. Take the two crises in turn, then compare them in section 6.

Hungary, 1956: why the opposition

The grievances Cambridge's mark schemes credit are consistent across seven years of papers, and they divide into three groups.

Repression. Hungary was run by Rakosi, described in the mark schemes as a hard-line communist fully committed to Moscow who "used the secret police to keep control by creating a climate of fear and arresting anyone who opposed communist rule". Opponents of the regime were executed or imprisoned. One mark scheme puts a figure on the secret police, the AVH: over 100,000 detained and a further 2,000 executed.

National humiliation. Soviet troops were stationed in the country. Hungarians were forced to learn Russian. The Russians controlled what was taught in schools. The Catholic Church was persecuted. National grievances, not just political ones.

Economic decline. Living standards were falling under communist rule, and food and industrial goods produced in Hungary were sent to the USSR rather than benefiting Hungarians.

And then a change in the weather. Stalin died. In February 1956 Khrushchev denounced Stalin, which suggested the rules had loosened. In June 1956 workers protested in Poland and the USSR agreed to some concessions, which told Hungarians that pressure worked. Some of Eisenhower's speeches gave Hungarians hope of American help. Gero replaced Rakosi, which satisfied nobody. In October students demanded that the Soviets get out of Hungary.

1. Stalin dies and Khrushchev denounces him
2. repression looks negotiable
3. Polish workers win concessions in June 1956
4. Hungarians conclude that pressure works
5. October demonstrations demand the Soviets leave
6. the demand escalates from reform to independence.

Hungary, 1956: what happened, and how the USSR reacted

On 23 October 1956 demonstrations began to get out of control, demanding independence from the Soviet Union and political freedom. Protestors pulled down a statue of Stalin. On 24 October Soviet tanks entered Budapest and fighting broke out across the country.

The USSR's first move was not force but concession. It accepted a new government under Imre Nagy, and a ceasefire. Nagy went much further than the USSR expected: he brought non-communists into the government, announced that one-party rule would end, promised to dissolve the secret police, declared Hungarian neutrality, and on 1 November announced that Hungary would leave the Warsaw Pact. He appealed to the United Nations for help. On 30 October the Soviet Union declared itself ready to withdraw troops, and Soviet forces did pull out of Budapest.

The Soviet leaders then changed their minds. On 4 November the Red Army invaded Budapest, with 200,000 Soviet troops sent into Hungary, capturing the airfields, highway junctions and bridges. There was bitter street fighting between Soviet troops and Hungarian freedom fighters, joined by most of the Hungarian army. About 3,000 Hungarians were killed. Thousands fled the country. Nagy was removed, captured and executed in 1958. Kadar was installed as leader and hard-line Soviet control was re-established. Hungary did not leave the Warsaw Pact.

The West did not intervene. Cambridge's schemes give two reasons and credit both: there was no real prospect of the West risking war over Hungary, and its attention was on the Suez crisis at the same moment.

1. Nagy is installed to calm the crisis
2. he ends one-party rule and announces withdrawal from the Warsaw Pact
3. that turns a domestic reform into a hole in the USSR's defensive barrier
4. if Hungary can leave, others can follow
5. Khrushchev reverses the withdrawal and invades on 4 November.

That chain is the answer to "why did the Soviet Union respond violently in Hungary", and Cambridge's own Level 3 exemplar makes exactly that move: the Warsaw Pact announcement is "the part of Nagy's plans which particularly upset and scared Khrushchev", and Soviet tanks began moving a few days after it became known.

Czechoslovakia, 1968: why the opposition

The Czechoslovak grievances overlap with the Hungarian ones but are weighted differently, and the difference is examinable.

Economic. Czechoslovakia suffered a recession in the 1960s. Industry struggled to produce goods people wanted to buy and the standard of living dropped. People resented it because the economy was controlled by the Soviet Union.

Political. Censorship, no freedom to criticise the government, no control over their own country, repression of national customs and traditions.

Where it came from is the crucial difference. In Hungary the pressure came from the streets. In Czechoslovakia it came from the Communist Party itself. Alexander Dubček became Secretary of the Communist Party in 1968, and he was a communist who wanted to reform communism, not remove it.

Czechoslovakia, 1968: the Prague Spring, and the reaction

Dubček's programme, called "socialism with a human face" and set out in an Action Programme, is worth learning as a list because 4 mark questions ask for it directly:

• less censorship, and then the abolition of censorship
• freedom of speech, and the right to criticise the government
• freedom of movement, and foreign travel allowed
• more rights for trade unions and greater freedom for them
• less use of the secret police
• the creation of workers' councils
• relaxed control of industry, with the emphasis moved to consumer goods

Two things Dubček did not do, and both are essential to the comparison in section 6: he did not propose leaving the Warsaw Pact, and he insisted his reforms were not a threat to communism.

The USSR's reaction was not immediate. It negotiated first. Dubček was summoned to Moscow, where he insisted on keeping his reforms. Only then, in August 1968, did tanks move in, and Cambridge's schemes are careful that these were Warsaw Pact forces rather than Soviet forces alone. Dubček told the Czech people not to resist, and there was no resistance. He was removed from power in 1968, expelled from the Party, and spent the next twenty years working as a clerk.

Why did the USSR act at all, given that Dubček was a loyal communist who promised to stay in the Pact? The mark schemes give four reasons and credit all of them:

• Contagion. Free press, freedom of speech and reduced control of industry in one Pact country would produce the same demands in the others.
• Czechoslovakia's weight. It was one of the most important countries behind the Iron Curtain, with a strong industrial base, geographically central, and in close contact with the rest of the Pact.
• Pressure from the other satellites. The leaders of East Germany and Poland were worried for their own positions and pressed the Soviets to act.
• Credibility. If the USSR did nothing, the other Eastern European countries would think it weak.

The Brezhnev Doctrine followed. Cambridge's schemes describe it as a Soviet policy which "called on the Soviet Union to intervene directly in countries where socialist rule was under threat", introduced as a response to the Prague Spring, to justify the occupation and to warn every other country in the bloc that the same would happen to them.

1. Dubček reforms from inside the Party
2. reform from inside cannot be dismissed as counter-revolution
3. if a loyal communist can liberalise and survive, every satellite will try it
4. so the reforms must be reversed even though Czechoslovakia is not leaving the Pact
5. and the reversal is then written into doctrine so it does not have to be repeated.

6. Focus point: how similar were Hungary 1956 and Czechoslovakia 1968?

This has been set as a 10 mark question in at least four separate wordings: how similar were the events; did resistance break out for the same reasons; which was the more serious problem; how different was the USSR's reaction. All four are the same comparison from different angles, so build one table and re-cut it to fit.

Read down the two columns and the shape of the judgement appears on its own: the causes and the conduct differ, the outcome does not. Both were revolts against Soviet control by people who wanted more freedom and better living standards; in both the USSR hesitated before acting; in both it used tanks; in both the leader was removed and Soviet-dominated communist power restored; in both the West did nothing. That is enough similarity to argue the question either way, which is exactly what a 10 mark question needs.

One technique note, and it comes from a Principal Examiner report rather than from any mark scheme. On a comparison question, do not write a paragraph on Hungary and then a paragraph on Czechoslovakia. Pick one feature, such as leadership or aims or the Soviet reaction, and compare the two countries inside the same paragraph. The report says in terms that writing one country then the other "meant that points of similarity and difference were less clearly drawn out". Feature by feature, not country by country.

7. Focus point: why the Berlin Wall was built in 1961

At the end of the Second World War Germany was divided into four zones, the eastern one Soviet. Berlin lay inside the Soviet zone but was itself divided into four, so a capitalist West Berlin existed deep inside communist East Germany. That single fact is the whole cause of the problem, and it is also the reason candidates confuse this with the Blockade: the same city, thirteen years apart, on two different Key Questions.

On 13 August 1961 the East German government began building a barbed wire and concrete wall between East and West Berlin. Cambridge's mark schemes describe it as 87 miles long, guarded by East German soldiers, with checkpoints where documents were examined, and people who tried to cross were often shot.

Reason one: the exodus, and the brain drain

Between 1949 and 1961 an enormous number of East Germans crossed into West Berlin and West Germany, and Cambridge describes them as disproportionately the skilled and the educated: engineers, teachers, trained workers. They left for the free life and the higher standard of living in the West. East Germany was losing precisely the people its economy depended on.

On the size of that outflow Cambridge's own documents do not agree with each other, so section 13 sets out the conflicting figures rather than choosing one. What every version agrees on is the phrase Cambridge uses: this was a brain drain, and East Germany was on the brink of economic collapse because of it.

Reason two: appearances, which the top band rewards

Here is where the 10 mark version of this question lives, because November 2024 set exactly the statement "The Berlin Wall was built to stop East Germans going to the West" and asked how far you agree. The Level 5 exemplar Cambridge prints does not deny that the Wall stopped people leaving. It says that was not the main reason.

The argument it makes: if too many people left, the East German economy would be destroyed and communism would be shown to be failing. Large numbers choosing a democratic country over a communist one was a propaganda defeat in itself. Khrushchev had been criticised by other communist states, including China, and wanted a tough solution that proved he was powerful. Ulbricht, the East German leader, had long wanted the border closed and pressed hard for it, blaming East Germany's problems partly on Soviet reparations policy and claiming East Germans were being mistreated and lured away by the West. Cambridge also records the claim, made at the time, that the Wall was to stop Western spying.

1. East Germans leave in large numbers
2. the leavers are the skilled ones the economy needs
3. their departure is also public proof that people prefer the West
4. so the Wall solves an economic problem and a propaganda problem at once
5. and closing the border lets Khrushchev look strong to Ulbricht, to Beijing and to Washington in the same act.

What the Wall did, and what it meant

For Berliners: families and friends separated, people who worked in the West unable to reach their jobs, no more free movement, living standards in the East declining, no access to Western goods, and the risk of being shot at the crossing.

For the Cold War: the West saw it as a violation of East to West agreements and as breaching the four-power status of Berlin, with American officials calling it a flagrant violation. It became the symbol of the division between capitalism and communism, and so its destruction in 1989 was read as an attack on communism itself.

For this Key Question, the Wall is evidence on both sides at once, and saying so is worth a judgement mark. It secured East Germany, ended the haemorrhage, and held for twenty-eight years, which is the case for control being secure. And it was an admission that a regime could only keep its population by imprisoning it, which is the case for control being insecure. A November 2019 examiner report notes approvingly that strong answers argued "the fact that the Berlin Wall had to be built" showed control was not secure. That is a ready-made Level 5 sentence.

The Wall was dismantled on 9 November 1989.

8. Focus point: the significance of Solidarity in Poland

Where it came from

Poland's economy was in a bad state by 1980. Shortages of basic goods, price rises, and in some cases rationing. In August 1980 the workers at the Lenin Shipyard in Gdansk went on strike, led by Lech Walesa, angry about price rises and about the sacking of workers who had complained about conditions. The government tried to contain it by cutting telephone lines and censoring news reports. The strike lasted a week. On 31 August the government agreed to let the workers form a union, and Solidarity was born out of the 21 Demands.

Its aims, as Cambridge lists them: trade unions free of Communist control, the right to strike, pay increases, a day off each week for all workers, and more food in the shops, with food exported only once domestic demand had been met. One detail in the mark schemes is worth more than it looks: the demands were national rather than local. A local pay dispute is an industrial matter. A national demand is a political one.

Why the government let it happen

Cambridge's schemes credit a hard-headed explanation: the workers involved were from shipbuilding and heavy industry, the most important industries in an economy already struggling, and a general strike by them would have been devastating. The demands looked economic rather than political. The government was playing for time. Solidarity also had advantages that made it hard to suppress quietly: the support of the Catholic Church, support in the West, its own newspaper, an effective organisation, and a deliberate policy of non-violent methods.

It grew enormously. On exactly how enormously Cambridge's own documents disagree, and section 13 sets out the range rather than picking a number.

The crackdown, and why it matters that the USSR did not do it

Under Soviet pressure the Polish leadership changed twice, and in 1981 General Jaruzelski took charge. He declared martial law, claiming Solidarity's leaders had been plotting a coup. Solidarity was suspended and then banned. Walesa and thousands of others were imprisoned.

The point that earns the mark is that the Poles did this, not the Russians. Warsaw Pact forces mobilised on Poland's borders and conducted manoeuvres in and around Poland as psychological pressure, and Cambridge's Paper 2 material for June 2022 is built entirely around the question of whether the USSR could rely on the Polish leadership to do the job. It could. No Soviet invasion took place. A June 2024 mark scheme prints the argument in its Level 5 exemplar: even where military force was not applied, "in reality the threat of it was sufficient".

Why it mattered anyway

Solidarity did not die. It went underground and continued to operate. Many of its supporters were released in 1985. In 1988 the government negotiated with it. In 1989 it was legalised, allowed to stand in elections, and won; a member of Solidarity, Mazowiecki, became Prime Minister, and Poland had the first non-Communist government in the Soviet bloc. Walesa went on to win the presidential election of 1990, presided over Poland's transition from communism to democracy, and was awarded the Nobel Peace Prize.

1. Solidarity forces a Soviet-backed communist government to concede, using strikes and no violence
2. that proves a communist government can be resisted by people acting together
3. it survives being banned
4. in 1989 it wins free elections and forms the first non-communist government in the bloc
5. and the other satellites now have a worked example.

Both sides of the Solidarity question

Set as a 10 mark question in at least four wordings, so hold both arguments ready.

It was a serious threat. Enormous membership across most of the workforce; strong enough that the government gave in to most of its demands; ideas, such as trade unions independent of the Communist Party, that were incompatible with communist control anywhere; a declared interest in workers' rights across the whole bloc, not just Poland; and an example that could spread.

It was not much of a threat. The Polish government could crush it whenever it decided to, and once Jaruzelski used force it "quickly crumbled". It was not directly challenging Soviet control, and could be presented as being about workers' rights rather than politics. The Soviets could always have moved the army in. Between 1981 and 1989 it changed nothing.

The judgement most likely to reach Level 5 is the one Cambridge itself prints: being crushed in 1981 does not mean it was not a threat, because its ideas did not die and in 1989 it reappeared and led the events that ended Soviet control.

9. Focus point: how far was Gorbachev personally responsible?

This is the focus point examiners like most, and the "personally" in the syllabus wording is the whole difficulty. It invites you to weigh one man against the conditions he inherited.

What Gorbachev actually did

Cambridge's mark schemes are specific, and the specifics are what buy the fifth and tenth marks. He led the USSR from 1985 to 1991. Reforms:

• Glasnost, openness, under which people who criticised the government should not be persecuted
• Perestroika, restructuring, aimed at making Soviet industry efficient and allowing an element of capitalism

And a series of statements about Eastern Europe, which matter more than the domestic reforms:

• in 1987 he told Warsaw Pact countries he would not intervene
• in July 1988 he told Eastern European leaders they must listen to their people
• in 1988 he declared that the Brezhnev Doctrine was no longer Soviet policy
• in 1989 he announced large cuts in Soviet forces stationed in Eastern Europe, and told the Warsaw Pact countries that the Red Army would not be used to prop up communist regimes
• he began withdrawing Soviet troops and aircraft from Eastern European countries, and withdrew from Afghanistan

One 2024 mark scheme gives the policy the name Cambridge is content to credit: the "Sinatra Doctrine", meaning the USSR would not step in to stop protest in Eastern European states.

Why he did it

Not idealism alone. The mark schemes put the economy first every time: the Soviet economy was in a terrible state, productivity was low, goods were of poor quality, ordinary Soviet citizens lived in poverty while enormous sums went to the armed forces, and the war in Afghanistan drained resources further. The USSR could no longer afford to keep troops across Eastern Europe and prop up unpopular regimes. He also thought the regimes did not deserve saving, thought intervening would cause a bloodbath, and had improving relations with the West that made a defensive buffer look less necessary.

1. the Soviet economy cannot sustain both the arms race and the empire
2. military spending is where the savings are
3. savings mean no Red Army guarantee for the satellites
4. the satellites' governments have nothing behind them but their own unpopularity
5. and glasnost has meanwhile told their populations that criticism is permitted.

What happened in 1989, and into 1990

Learn this as a sequence, because 4 mark questions ask for events in a named year and 6 mark questions ask why they cascaded.

• Poland: Solidarity legalised; free elections; Solidarity wins; a Solidarity member becomes Prime Minister; by June Poland is independent of the USSR
• Hungary: people begin dismantling the fence along the Austrian border; by September Hungary is independent of the USSR
• East Germany: in October, mass demonstrations while Gorbachev is visiting; in Leipzig a protest is shut down by the secret police but is filmed by West German television, which inspires other cities; Honecker orders troops to fire on demonstrators and they refuse; thousands march to the Berlin checkpoints; the guards take no action and join the marchers; the Wall is dismantled on 9 November
• Czechoslovakia: borders with the West opened in November; the communist government falls in December
• Bulgaria and Romania: communist governments fall in December; the Romanian leader has to flee for his life
• 1990: the Baltic republics declare independence from the USSR; Germany is reunified

Both sides of the Gorbachev question

He was personally responsible. He removed the one thing holding the satellite regimes up. Every one of them had survived on the certainty of Soviet military support; he cancelled that certainty explicitly and repeatedly, and within a year they were all gone. Cambridge's own Level 5 exemplar puts Gorbachev above Walesa on exactly this ground: Walesa was finished in 1981 and only came back because of the situation Gorbachev created.

He was not. The discontent long predated him: shortages of bread and meat, rationing, fixed but inefficient prices, no consumer goods, censorship, living standards well below the West's. The economic crisis he inherited was not of his making, and by the time he took office the USSR could not have afforded to hold the bloc even if he had wanted to. Solidarity had already shown in 1980 what people power could do. The scale of unrest in 1989 was beyond what military force could have reversed. On this reading Gorbachev did not release the grip; he recognised that it had already gone.

A November 2024 Level 5 exemplar splits the difference in a way worth copying: discontent was not the decisive factor because it had existed for years and had always been held in check; what changed in the 1980s was Gorbachev. That is a judgement about timing rather than about causes, and timing arguments are the easiest way to earn the tenth mark on this question.

10. What the papers actually ask

Across the 2018 to 2024 series, 23 of the 48 available Paper 1 mark schemes set a question on this Key Question, almost always as Question 8. The stems repeat in families. Learn the family, not the individual question.

The 4 mark families

• Hungary: describe events in Hungary in 1956; describe the events that led to the revolt; describe how the Soviet Union responded; describe Imre Nagy's role
• Czechoslovakia: who was Alexander Dubček; describe Dubček's actions in 1968; what reforms did he propose; what was the Prague Spring; what was the Brezhnev Doctrine
• Berlin: what was the Berlin Wall; describe its impact on the people of Berlin
• Poland: what was Solidarity; what were its aims; describe its activities during the 1980s; describe events in Gdansk in August 1980; describe the achievements of Lech Walesa; describe how the Polish authorities tried to deal with Solidarity from 1980 to 1989
• The collapse: describe Gorbachev's role; describe moves against Soviet control in 1989; describe events in Berlin and East Germany in 1989; describe events in Eastern Europe in 1989 to 1990

The 6 mark families

Always beginning Why, and always needing two explained reasons.

• Why was the Berlin Wall built? Why was it important? Why did many Germans dislike it? Why did building it worsen relations between the USSR and the West?
• Why did Hungarians rise up against Soviet control in 1956? Why was there an uprising? Why was Soviet control over Hungary in the early 1950s resented?
• Why did the USSR respond violently in Hungary in 1956? Why did it respond violently to events in Czechoslovakia in 1968? Why was Czechoslovakia invaded?
• Why was it important for the USSR to stop Dubček's reform programme? Why was there a demand for change in Czechoslovakia in 1968? Why was Dubček important? Why was the Brezhnev Doctrine introduced?
• Why did the Polish government allow the creation of Solidarity in 1980? Why did Solidarity grow rapidly? Why did the Polish government introduce martial law in 1981? Why was Solidarity important in the decline of Soviet power?
• Why did Gorbachev change Soviet policy towards Eastern Europe? Why did he do little to defend Soviet control? Why did he decide not to intervene in 1989? Why were his reforms important for Eastern Europe?

The 10 mark families

11. Judgement sentences for this Key Question

The general shapes, and what separates a Level 2 identification from a Level 4 explanation, are in the How Cambridge marks History 0470 Paper 1 notes. What follows is the same move made about this content, because a judgement has to be about something.

Never write that there are arguments on both sides. Write a position with a reason attached:

• "Soviet control was secure in power and insecure in consent, because every crisis was won by force and none of them was won by argument."
• "The Wall proves both cases at once: it worked for twenty-eight years, and a system that has to be walled shut is not a secure one."
• "Gorbachev decided the timing but not the outcome, because the economy had already made the empire unaffordable before he took office."
• "Czechoslovakia was the more dangerous of the two, because reform coming from inside the Party could not be dismissed as counter-revolution."
• "Hungary was the more dangerous of the two, because it was the only one that tried to leave the Warsaw Pact."
• "Solidarity mattered less for what it achieved in 1981 than for what it proved in 1980, that a communist government could be made to give way."
• "The Soviet reaction was always military, because even where tanks were not used the threat of them decided what happened."

12. What examiner reports say candidates get wrong here

The faults that apply to any question on the paper, overwriting part (a), listing instead of explaining, one-sided part (c) answers and finishing without a judgement, are in the How Cambridge marks History 0470 Paper 1 notes. These are the ones Principal Examiner reports name on this content in particular, and they repeat almost word for word across the series.

• Confusing the Berlin Wall with the Berlin Blockade and Airlift. This is the most frequently named fault on this Key Question, and it runs both ways. On a Wall question, reports record "a number of responses were focused on the Berlin Blockade and the Berlin Airlift; this was not relevant to the question". On Blockade questions belonging to Key Question 4, they record candidates who "confused the Blockade with the building or fall of the Berlin Wall", and others "segueing between the two issues". One report notes the specific misconception that the Berlin Airlift was arranged as a result of the building of the Wall.
• Ignoring the date band in the question. Named on this content more often than on any other. On a question about 1956 to 1968, candidates wrote about Poland and Solidarity in the 1980s and the pulling down of the Wall. On a question about 1948 to 1961, they wrote about Czechoslovakia in 1968 and Poland in the 1980s, and some wrote about Vietnam and the Cuban Missile Crisis, which belong to Key Question 5 entirely. A report on a 1945 to 1948 question records weaker answers that "were more about later uprisings, such as the Prague Spring or Solidarity". The date band beats everything you know.
• Describing the reforms instead of explaining why they had to be stopped. Reports name this twice in identical words: "weaker responses shifted the focus of the question and described Dubcek's reforms, rather than emphasising why it was important for the Soviet Union to stop them".
• Describing the uprising instead of explaining why it happened. The same fault on Hungary: "weaker responses, sometimes lengthy, described the uprising in Hungary, rather than the reasons for it occurring".
• Narrating Gorbachev instead of answering the question. "Less successful responses were characterised by a narrative of Gorbachev's reforms, with no reference to surprised or not surprised", and elsewhere "with no reference to the collapse of Soviet power". Candidates know a great deal about glasnost and perestroika and spend it on the wrong target.
• Staying inside the USSR when the question is about Eastern Europe. On a question about Gorbachev's role in the collapse of Soviet control over Eastern Europe, "some responses made no reference to Eastern Europe at all, and focused solely upon events in the USSR". On another, weaker answers understood the problems in the USSR "but were unable to link this to the collapse of control in Eastern Europe".
• Describing Solidarity instead of using it. "A number of candidates wrote about who was involved in Solidarity and what happened in Poland" without addressing why it mattered; another report records candidates "describing the background and features of Solidarity without making any explicit link to the question". One report even notes candidates who wrote about solidarity between countries in an alliance system, having missed what the word named.
• Country-by-country comparison. Covered in section 6, and reports state it directly: comparing feature by feature inside one paragraph draws out similarity and difference; a paragraph on Hungary followed by a paragraph on Czechoslovakia does not.
• Confusing the 1948 communist takeover of Czechoslovakia with the Prague Spring. Named on a Key Question 4 question, where candidates "misinterpret the question to state what happened during the Prague Spring, having missed the date of 1948". Two Czechoslovak crises, twenty years apart, on two different Key Questions.
• Not linking the Brezhnev Doctrine to Czechoslovakia. "Few candidates were able to link the doctrine to the Czechoslovak context and the Soviet response to Dubcek's reforms", and some "confused the Doctrine with the building of the Wall".

13. Where Cambridge's own documents disagree

Three figures in this Key Question are given differently in different Cambridge documents. Do not try to reconcile them and do not treat any single one as the right answer. Learn the shape of the number, use a hedge such as "over" or "about", and put the effort into the explanation instead, where the marks are.

The number who left East Germany between 1949 and 1961. One mark scheme says "over 2.5 million East Germans had left between 1949 and 1961". Another says "over 2.6 million people from the East went to West Berlin and West Germany" in the same period, and the same scheme elsewhere describes it as "fifteen per cent of the East German population". A Paper 2 source puts it at "about 2.7 million". Safe on any paper: over two and a half million between 1949 and 1961, most of them skilled workers.

Solidarity's membership. The mark schemes give "over 9 million by 1980", "as many as 10 million members", "over 7 million members", "9 million", "10 million people had joined and over 80 per cent of the workforce were members", and "9.4 million" in 1981. Safe on any paper: millions of members, a large share of the entire Polish workforce. The examinable point is not the number but what a union that size could do to the economy, which is why the government negotiated instead of banning it at once.

When Jaruzelski took over. Cambridge's Paper 2 background information for June 2022 says Kania replaced Gierek in September 1980 and was himself replaced by Jaruzelski in October 1981. A Principal Examiner report describes "the new Prime Minister Jaruzelski" taking over in February 1981. Safe on any paper: Jaruzelski took charge in 1981 and imposed martial law, which is the part that carries the argument.

One smaller discrepancy, for completeness. A 2023 mark scheme prints, as an acceptable Level 2 statement, that Dubček "was leader of Czechoslovakia in 1967", while 2024 schemes say he became leader in 1968. Write 1968 and move on; nothing in the argument turns on it.

14. Quick revision

• The question is a verdict, not a story. Every 10 mark question is a version of "secure or not". Crises without a judgement sit in Level 3.
• It is Question 8. Twenty-three of 48 mark schemes from 2018 to 2024 set it, eighteen of them at Question 8, and all six times it appeared in the 2024 series it was Question 8.
• Berlin Blockade is Key Question 4. Berlin Wall is Key Question 6. The Warsaw Pact's formation is Key Question 4 too.
• 1948 is hard, c.1989 is soft. The "c." reaches into 1990: German reunification and the Baltic declarations are creditable. A date band printed inside a question overrides everything.
• Hungary 1956: Rakosi's repression, Soviet troops, forced Russian, falling living standards. Khrushchev denounces Stalin in February, Poles win concessions in June, students demonstrate on 23 October, tanks on 24 October, Nagy installed, ends one-party rule, declares neutrality and on 1 November withdrawal from the Warsaw Pact, Soviets withdraw on 30 October then reverse, 4 November invasion with 200,000 troops, about 3,000 Hungarians killed, Nagy executed 1958, Kadar installed, West distracted by Suez.
• Czechoslovakia 1968: recession and falling living standards, Dubček Party Secretary in 1968, "socialism with a human face", Action Programme, censorship abolished, freedom of speech, workers' councils, trade union rights, but stays in the Warsaw Pact. Moscow negotiates first, then Warsaw Pact tanks in August 1968, no resistance, Dubček expelled and made a clerk. Brezhnev Doctrine follows: the USSR will intervene where socialist rule is threatened.
• The comparison in one line: different causes, different conduct, same outcome. Hungary from the street and out of the Pact; Czechoslovakia from the Party and inside it.
• Berlin Wall: 13 August 1961, barbed wire then concrete, 87 miles, guarded, checkpoints, shootings. Reasons: stop the brain drain of skilled workers, and stop communism looking like it was losing. Ulbricht pressed for it; Khrushchev wanted to look strong to China and the West. Down on 9 November 1989.
• Solidarity: August 1980, Lenin Shipyard, Gdansk, Walesa, price rises, 21 Demands, union recognised 31 August, non-violent, backed by the Catholic Church and the West, millions of members. Martial law 1981 under Jaruzelski, banned, leaders jailed, but it goes underground, is legalised in 1989, wins the elections, and Mazowiecki forms the first non-communist government in the bloc.
• The USSR did not invade Poland. Warsaw Pact manoeuvres on the border did the work. Whether the threat of force counts as force is a real 10 mark question.
• Gorbachev: leads from 1985, glasnost and perestroika, driven by a failing economy and Afghanistan. 1987 no intervention; July 1988 listen to your people; 1988 the Brezhnev Doctrine is dropped; 1989 troop cuts and no Red Army guarantee. The "Sinatra Doctrine".
• 1989: Poland votes, Hungary opens the Austrian border, Leipzig is filmed, Honecker's troops refuse to fire, the Wall comes down on 9 November, Czechoslovakia opens its borders, and in December Czechoslovakia, Bulgaria and Romania fall. 1990: the Baltic republics declare independence and Germany reunifies.
• The best judgements distinguish power from consent, immediate threat from long-term threat, and timing from cause.

Where these facts come from

History notes are only as good as their sourcing, so this section is deliberately explicit.

Taken from Cambridge's own published 0470 materials, meaning the 2027 and 2028 syllabus, the 2018 to 2024 Paper 1 mark schemes across all three variants and all three sittings, the Paper 2 question papers, and the Principal Examiner reports:

the Key Question, focus point and specified content wording, and the boundaries with Key Questions 4 and 5; the Paper 1 question numbering and the 2027 Paper 2 prescribed topic; Rakosi's rule and methods, the AVH detention and execution figures, the Hungarian grievances including forced Russian and the persecution of the Catholic Church, Khrushchev's denunciation of Stalin in February 1956, the Polish concessions of June 1956, Gero replacing Rakosi, the dates of 23 and 24 October, 30 October, 1 November and 4 November 1956, the 200,000 troops, the figure of about 3,000 Hungarians killed, Nagy's programme and his execution in 1958, Kadar's installation, and the Suez distraction; Dubček's reforms and the Action Programme, his insistence on remaining in the Warsaw Pact, the Moscow negotiations, the August 1968 Warsaw Pact intervention, the absence of resistance, his expulsion and his twenty years as a clerk, and the Brezhnev Doctrine and its purpose; the Wall's construction on 13 August 1961, its length of 87 miles, its guards and checkpoints, the brain drain and the competing figures for it, Ulbricht's pressure and Khrushchev's motives including the split with China, the Western reaction, and the dismantling on 9 November 1989; the Gdansk strike of August 1980, the Lenin Shipyard, Walesa, the 21 Demands, the union's aims, the government's reasons for conceding, Church and Western support, martial law under Jaruzelski, the underground survival, the 1989 legalisation and elections, Mazowiecki, Walesa's 1990 presidency and Nobel Prize, and the Warsaw Pact manoeuvres rather than an invasion; Gorbachev's dates, glasnost and perestroika, Afghanistan, the 1987, 1988 and 1989 statements, the ending of the Brezhnev Doctrine, the "Sinatra Doctrine", and the 1989 sequence across Poland, Hungary, East Germany, Czechoslovakia, Bulgaria and Romania, with the Baltic declarations and German reunification in 1990.

Deliberately not asserted here. No casualty figure appears in this file except the one Cambridge itself prints, about 3,000 Hungarians killed, which is stated in a mark scheme and repeated in a Principal Examiner report. Cambridge's materials give no death toll for Czechoslovakia in 1968, so none is given above. The three figures Cambridge states inconsistently are set out in section 13 rather than resolved.

Standard textbook facts that do not appear in the 0470 materials read for these notes, and which you should therefore check against your own textbook before quoting them as precise:

• the exact date in August 1968 of the Warsaw Pact intervention in Czechoslovakia
• the exact month in 1981 when martial law was declared in Poland, and the exact date in 1989 of the Polish elections
• the place of Nagy's execution: one 2024 mark scheme says Moscow, and no other Cambridge document read here corroborates it
• the names of the East German, Hungarian and Czechoslovak leaders installed after each crisis, beyond Kadar
• the number killed at the Berlin Wall, and the exact height and structure of it
• the membership of the Warsaw Pact beyond the countries a Principal Examiner report names

None of those is needed for a top answer, which is why they have been left out of the body above rather than asserted.

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