The fall of Constantinople
Answer: War
Explanation: War was one factor in the decline of Rome.
Answer: The plan, overall, was to transition the Soviet Union from a weak, poorly controlled, agriculture state, into an industrial powerhouse. While the vision was grand, its planning was ineffective and unrealistic given the short amount of time given to meet the desired goals.
Explanation: The first Five Year Plan (1928 -1933), arguable the most successful, quadrupled the number of workers in industry, transportation and construction.
He did not break terms of the Treaty of Versailles by making a treaty with Russia.