Why did the Cold War spread to Vietnam and Korea? choose one

Question

The Chinese were interfering with the governments there.
The Soviet Union had installed pro-Soviet governments there.
Communist governments had taken over the northern parts of the
countries.
Cuba made agreements with the countries for protection.

Answer 1

The correct choice is: Communist governments had taken over the northern parts of the countries.

In both Korea and Vietnam, communist movements gained control over the northern regions, leading to the division of these countries. In Korea, the communist government established in the North (the Democratic People’s Republic of Korea) prompted the South (the Republic of Korea) to seek support from the United States and other Western nations. Similarly, in Vietnam, the communist government in the North (the Democratic Republic of Vietnam) led to conflict with the South (the Republic of Vietnam), which was supported by the United States. These situations contributed to the spread of Cold War tensions as the United States and the Soviet Union sought to expand their influence through supporting opposing sides in these conflicts.