B) the conflict resulted in a civil war
Answer:
D. The Soviets successfully tested an atomic bomb.
Explanation:
China officially fell to the communist party in 1949 after the communist took Beijing. In the same year the soviets successfully detonated there first atom bomb at Semipalatinsk Test Site, in Kazakhstan.
By gaining possessions and influence in Asia and the Americas during the Spanish-American War, the United States officially became and imperialist country, with its political and military "reach" extended.