What is the correct order of events that led to the breakup of the Soviet Union?

I. The crisis in Afghanistan occurred. II. Military force was not used to stop protests in Eastern Europe. III. Many Soviets became fearful of rapid changes in the country. IV. The Soviet Union faced huge expenses.

I. Military force was not used to stop protests in Eastern Europe. II. The Soviet Union faced huge expenses. III. The crisis in Afghanistan occurred. IV. Many Soviets became fearful of rapid changes in the country.

I. Many Soviets became fearful of rapid changes in the country. II. The Soviet Union faced huge expenses. III. Military force was not used to stop protests in Eastern Europe. IV. The crisis in Afghanistan occurred.

I. Many Soviets became fearful of rapid changes in the country. II. Force was not used to stop protests in Eastern Europe. III. The crisis in Afghanistan occurred. IV. The Soviet Union faced huge expense