The answer is D I hope this help
<span>The actions of Japan finally forced the United States to enter the war.</span>
They started domesticating wheat. This wasn't their main feat however since they also started herding sheep and domesticating goats. These two enabled them to stop moving around like nomads and make a real civilization in the area which resulted in what is now known as history.
D. the emergence of credit and an increase in manufacturing output
France was upset with Great Britain because of the war they just had, so they joined America. The Revolutionary War was fought between Great Britain and America.