The United States entered the war in 1941 after a Japanese attack on?

In response, the U.S. imposed an oil embargo on Japan in August 1941 to stop aiding their aggression in Asia and to contain Japanese actions such as their war crimes in Nanking. There was also an embargo on steel.

Explanation:

the answer should be arrogance & pride.

c. troops marched forward in close formation against newer, more accurate weapons