It lasted around 600 years. The Louisiana Caddo wanted to moved southwest to live with others of the tribe in Texas.
2nd option: Changing Stalin's policies.
The term "de-Stalinization" refers to the political reforms enacted by Nikita Khrushchev.
The reforms eradicated Stalin's influence on the Soviet Union. Khrushchev condemned his predecssor's (Stalin's) actions, and his image as this infalliable leader. Khrushchev promised to revert the Soviet Union back to its self-proclaimed socialist society.