The difference between a aid, treaty, and alliance is a aid is you only supplied that country with medical supply's or food to a country.
a treaty is when a country has an agreement to help each other during the war. A Alliance is when 2 or more country's have a pact that if one country gets attacked they have to join the fight and help that country that was attacked.
The USA was not apart of the diagram because they joined later during. And they do at one point come apart of the diagram during 1917 because they felt like they couldn't sit back a watch no more.
a treaty is when a country has an agreement to help each other during the war. A Alliance is when 2 or more country's have a pact that if one country gets attacked they have to join the fight and help that country that was attacked.
The USA was not apart of the diagram because they joined later during. And they do at one point come apart of the diagram during 1917 because they felt like they couldn't sit back a watch no more.