Question

The US became involved in world war 2 to oppose the aggression of

Answer 1

Answer:

Japan

Explanation:

The United States declared war on Japan following the Japanese attack on Pearl Harbor (an American naval base in Hawaii) on December 7, 1941. Japan had signed a military alliance (the Tripartite Pact) with Germany and Italy, and as such, the U.S effectively declared war on Germany and Italy as well.