What contributed to the decline of the Yuan dynasty? A. a lack of infrastructure

B. a lack of printed currency

C. failed military campaigns

D. unfair treatment of Mongols

C failed military campaigns

Explanation:

pls mark me as brainliest if this was correct!

hope this helps =3=

it was the new england colonies.

hope dis !

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).