Step 1: Understanding the events.
- 1. Formation of USSR: The USSR was formed in 1922 after the Russian Revolution.
- 3. Nazi party came to power in Germany: The Nazi party came to power in Germany in 1933.
- 2. Japan’s attack on Pearl Harbor: Japan attacked Pearl Harbor on December 7, 1941.
- 4. Germany’s attack on USSR: Germany attacked the USSR on June 22, 1941, during World War II.
Step 2: Chronological order.
The correct chronological order is:
1. Formation of USSR (1922)
2. Nazi party came to power in Germany (1933)
3. Japan’s attack on Pearl Harbor (1941)
4. Germany’s attack on USSR (1941).
Final Answer: 1, 3, 2, 4.