Amajor reason for the united states neutrality in the 1930s was the nation's
a. belief in the domino theory.
b. disillusionment resulting from world war i.
c. strong approval of political conditions in europe.
d. military and naval superiority.

A major reason for the United States neutrality in 1930s was the nation's disillusionment resulting from World War I. The correct option among all the options given in the question is option "b". The people of united States of America was not ready to digest the consequences of another war. The country was going through a time of depression and added pressure would crumble the economy totally.

The statement is correct because if there is a bunch of noise around you and you are focusing on the noise you will not comprehend your questions and lessons nor will you be able to get the proportion information you need and you will likely spend many more hours on work than normal than if you could ignore the sound

Answer(a) one needs to learn from experts and be determined to be the best in the field;