I want to know the answer to the following question:
What part of the USSR did Armenia join?
All the background I'm provided with is that "In late 1920, the communists came to power following an invasion of Armenia by the Red Army, and in 1922, Armenia became part of the Transcaucasian SFSR of the Soviet Union, later forming the Armenian Soviet Socialist Republic (1936 to September 21, 1991).". Is that enough to answer the question?
Answer: yes