Why did communism in the soviet union collapse in the late 1980s?

consider:

political factors: what did leaders in the soviet union, the united states, and europe do to further the fall of communism?
military factors: what effect did military policies and actions in the united states and in the soviet union have?
economic factors: what effect did the economic situation in the soviet union have?
social/cultural factors: what was the attitude of the people of the soviet bloc countries? what impact did glasnost have? what was the impact of dissidents?

1. how did the works progress administration (wpa) contribute to the cultural development of american cities? a. by paying artists to create new works for public spaces b. by granting scholarships to underprivileged students to study art c. by sponsoring cultural exchanges with musicians from other countries 2. which of the following best describes the effect of the new deal on the great depression? a. the new deal eased the effects of the great depression. b. the new deal alone ended the depression. c. production rates during the great depression only fully recovered as the united states prepared to enter world war ii.