ANSWER: 1. Declared war on the Axis Powers
Explanation:
the United States was officially neutral, as it was bound by the Neutrality Acts not to get involved in the conflicts raging in Europe and Asia. Prior to the attack on Pearl Harbor, public opinion in the United States had not been unanimous. When polled in January 1940, 60% of Americans were in favor of helping the United Kingdom in the war.
Entangling alliances grew the small conflicts instantly.
When Austria-Hungary attacked Serbia for just the region of Bosnia-Herzegovina, automatically Russia and Germany were in the war.
The Americans had little to no training and very limited supplies.<span />
The allies were most important in helping the colonists win the American Revolution. Primarily, France. France helped America because of they wanted to seek revenge on Britian as they had won the Seven Years War against France and they also hoped recoup some of the land that they had lost in that war. France also wanted to trade with the United States and believed in Freedom, all reasons why they helped the United States.