C. The Underground Railroad helped slaves escape to the North.
Answer:
The right answer is: domino theory.
Explanation:
The domino theory was seen as a likely outcome in the geopolitical chess of the Cold War in the developing world. According to the views and mentality of the era, if one country falls to Communist hands, neighbors will follow. It was a rationale for action in both Korea and Vietnam. It was also applied to Latin America.
France
The United States was heavily influenced by the French Revolution. Moreover, when French diplomats signed the Treaty of Alliance in 1778, they essentially vouched for the United States. French supported contributed to the independence of the United States and success in the revolutionary war
