The United states of America's policy to check the spread of Communism best describes the united state's policy of containment following World War II.
<u>Explanation:</u>
First let us understand the 'domino effect'. A Domino effect is the collective effect produced when one event sets off similar types of events. Containment was a foreign policy of United states of America after the World war II (during the cold war).
It was laid out by "G.F. Kennan" in 1947. He stated that communism had to be contained or else it would spread to neighbouring countries. This theory of G.F. Kennan is called Domino theory. It later led "United states of America" to intervene in Vietnam as well as central America.
Immigrants desired to come to the United States in order to obtain better job opportunities, and escape ongoing wars in their homeland. (Might not be the best, just kinda thought of it on the spot)
