15th to the 17th centuries were the Age of Exploration
Answer: 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 expenses.
Explanation:
After the defeat of Japan in World War II, the United States led the Allies in the occupation and rehabilitation of the Japanese state. Between the years 1945 and 1952, the U.S. occupying forces, led by General Douglas A. MacArthur, enacted widespread military, political, economic, and social reforms.
Using simple words, imperialism is a policy of certain country involving a will of extending its power by using any kind of pressure or force.
For example - In 1939 Nazi Germany together with Soviet Russia jointly invaded Poland, in the result, both countries extended its borders.