After World War II, the United States signed several treaties with foreign countries. These treaties called for the nations that signed them to protect each other, even if an enemy attacked only one of them. Which factor caused the United States to sign the treaties? 5 points
A. the outbreak of many revolutions in South America and Latin America
B. the growing threat of the former Soviet Union and world communism
C. the failure of United States troops to fight effectively in World War II
D. the growing sense of trust between China and Soviet Union