Why do muslims began to cooperate with the crusaders ?

bc they are christans and did not want to be in cristmas

Explanation:

i think it's a)sparta

united states reinforcements contributed greatly to three allied victories in france at: cantigny (first major american battle), argonne (the largest in the united states military history, involving 1.2 million american soldiers), and château-thierry (one of the first actions under general pershing).