How did Mikhail Gorbachev's policies contribute to the collapse of communism in Eastern Europe? A. Perestroika showed communist countries that the free enterprise system had failed.
B. Glasnost warned other countries that the Soviets were in control.
C. Perestroika showed communist countries the strength of the Soviet economy.
D. Glasnost was a signal to other countries that they could get rid of communism.

the fact that could also be added to column b is that during world war ii, specifically between the years 1941 and 1945, japan expanded its territory towards the indonesian territory in what was known later as part of the "pacific war". in that time, japan could conquer the philipines, singapore,   borneo, central java, malang, cebu, sumatra and various other islands of the area, therefore expanding its territory for a brief period of time.

idk

explanation:

i think the answer's are a) b) and c)