the answer is D both A and C are correct you need to look at how the person routine change just in case you might have said something wrong it's important to know how people feel
I believe it is B isn't, because if you use the others it most likely sounds like slang.
Answer:
The Americans
Explanation / Resources:
"The United States received the disputed Texan territory, as well as New Mexico territory and California. The Mexican government was paid $15 million — the same sum issued to France for the Louisiana Territory. The United States Army won a grand victory." (www.ushistory.org)
"The Mexican-American War was a conflict between the United States and Mexico, fought from April 1846 to February 1848. Won by the Americans" (www.britannica.com)
Verbs like am, is, are, was, were do not show action; they are verbs of being. They tell us about a state of being or existence. They don’t give any meaning but they are used to describe a subject. The be verbs are followed by a noun or an adjective or an adverb.
