There is no specific time for when Stalin could be considered "in power." Following Lenin's death in 1924, Stalin gradually accumulated power and political control over a period of a few years. However, if the beginning of his reign is thought of as the time he first had complete control, then this was in 1929. His own death in 1953 signaled the end of his years in power. Thus, Stalin was in sole control for 24 years (give or take some months).
Georgy Malenko came after Joseph Stalin but was only in power for about a week. The Troika ruled for 6 months after Malenko. Then Nikita Khruschev was in power for 11 years.
It was called the Big Purge. Stalin's reign of terror is referred to as the Great Terror or the Great Purge.
Joseph Stalin was in power for 30 years. He was in command of the Soviet Union from April 3, 1922 to October 16, 1952. His official title was, General Secretary of the Central Committee of the Communist Party of the Soviet Union.
In WWII and for many years after it was Josef Stalin.
10 years in Stalin's labor camps.
Joseph Stalin was the dictator of Russia.
Josef Stalin dictator over the Soviet Union
Joseph Stalin was in power from 1922 through 1952.
Stalin was in sole control from 1929 to his death in 1953 for a total of 24 years. For about six years before that from about 1923, when Lenin was incapacitated due to a stroke, Stalin, Lev Kamenev and Grigory Zinoviev ruled as a triumvirate until Stalin eventually ousted even his two allies from the Communist Party to take sole control in 1929.
Stalin
He died