Answer:
Revolution
Explanation:
In 1934 Joseph Stalin created the NKVD as a secret police force.
In 1936 Joseph Stalin began what is known as the great purge. The purges lasted for 2 years all the way until 1938.
Joseph Stalin would use the NKVD to repress cultural and religious minorities as well as represss all those who spoke out against his regime.
During his regime, Staling never had to start or lead a revolution as he gained power from the death of Lenin and was able to keep it through supression and purges.
