Question

Which idea, one which formed the basis of American foreign policy in the 1960s, was largely discredited by events of the 1970s in the wake of the Vietnam War?

1) The idea that communism was a monolithic global movement controlled by Moscow and Beijing
2) The idea that communist movements in Southeast Asia were nationalistic and intolerant of outside influences
3) The idea that Vietnam invaded Cambodia and installed a pro-Vietnamese government
4) The idea that China supported the ousted Khmer Rouge

Answer 1

The idea that communism was a monolithic global movement controlled by Moscow and Beijing was discredited by events of the 1970s in the wake of the Vietnam War.

Step-by-step explanation:

The idea that formed the basis of American foreign policy in the 1960s and was largely discredited by events of the 1970s in the wake of the Vietnam War is:

1) The idea that communism was a monolithic global movement controlled by Moscow and Beijing

In the 1960s, the United States saw communism as a united and coordinated movement, with Moscow and Beijing pulling the strings. However, the events of the 1970s, such as the Sino-Soviet split and the Vietnamese communists' independence from China and the Soviet Union, showed that communism was not a monolithic force. These events discredited the idea that communism was a global movement controlled by Moscow and Beijing, leading to a shift in American foreign policy.