Answer:
to place restrictions on other countries
Explanation:
no free trade unless barriers
Militarism, Alliances, Imperialism, and Nationalism
Containment was a United States policy using numerous strategies to prevent the spread of communism abroad. A component of the Cold War, this policy was a response to a series of moves by the Soviet Union to enlarge its communist sphere of influence in Eastern Europe, China, Korea, and Vietnam.
Samuel Morse invented the telegraph