Answer:
1. The Russian Revolution results in the overthrow of
the existing Russian government.
2. Joseph Stalin becomes head of the Soviet Union.
3. The Hungarian Revolution is put down by the Red
Army.
4. Solidarity, led by Lech Walesa, is formed in Poland.
5. Multiple countries in Eastern Europe revolt, and the
Berlin Wall falls.
Step-by-step explanation:
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1. The Russian Revolution results in the overthrow of
the existing Russian government. 1917
2. Joseph Stalin becomes head of the Soviet Union. 1924
3. The Hungarian Revolution is put down by the Red
Army. 1956
4. Solidarity, led by Lech Walesa, is formed in Poland. 1980
5. Multiple countries in Eastern Europe revolt, and the
Berlin Wall falls. 1989