Question

1948
1956
1961
1968
the soviet union invaded czechoslovakia and reversed its economic reforms.
yugoslavia parted ways with the soviet union because of political differences.
workers in poland won higher wages after an uprising.
military forces began constructing the berlin wall.

Explanation:

Match each event to its correct historical year based on Cold War-era Eastern European history:

1. 1948: Yugoslavia's split with the USSR was a key early post-WWII rift in the Eastern Bloc.
2. 1956: The Polish workers' uprising led to wage concessions.
3. 1961: The Berlin Wall was constructed to stop emigration from East Berlin.
4. 1968: The Soviet-led invasion of Czechoslovakia ended the Prague Spring reforms.

Answer:

1948: Yugoslavia parted ways with the Soviet Union because of political differences.
1956: Workers in Poland won higher wages after an uprising.
1961: Military forces began constructing the Berlin Wall.
1968: The Soviet Union invaded Czechoslovakia and reversed its economic reforms.