Which of the following was a factor in the development of the cold war

a. Chinese socialists took control of the government in China

b. An arms race developed between the U. S. and the Soviet Union

c. An alliance was formed between the Soviet Union, Belgium, France, and Portugal

d. A wall was built that divided Portland into two nations

The option which was a factor in the development of the Cold War was B. an arms race developed between the US and the Soviet Union.

They were fighting to see which country had more weapons - nuclear weapons, to be more precise.

The Cold War was mainly fought between America and Russia, the other countries didn't have much to do with it.