What is the difference between aid, a treaty, and a alliance?
An aid is like when a country needs supplies the country sends the supplies and other things that the country needs.
A treaty is an agreement two countries have between each other.
An alliance is like when one country attacks another country and the country that was attacked calls lout their allies and it's allies fight back the country that attacked the other country.
A treaty is an agreement two countries have between each other.
An alliance is like when one country attacks another country and the country that was attacked calls lout their allies and it's allies fight back the country that attacked the other country.
Why isn't the U.S. part of this diagram? Does the U.S. become part of this diagram at some point? When? Why do they join?
The United States isn't part of the diagram because they weren't in the war yet. The U.S. becomes part of the diagram when Japan hits the U.S. at Pearl Harbor.