Answer:
1: France, England, Russia, and the U.S.
2: Germany, Austria-Hungary, and the Ottoman Empire
3: Where the counties entered combat
Other #3: Britain and France against Germany
4:Germany against Russia
5: Italy and France against Germany and Austria-Hungary
6: the US fought in the western front because they could get to France on ships easily since air travel wasn't a thing yet
Explanation:
Info in the paragraph above questions
