The Gadsden Purchase enabled the United States to "B. Increasecrop production in the Southwest," since this was a purchase of relatively fertile land in the region.
Monet and Renoir painted together.
I'm pretty sure that it is A. work against an author because it might cause readers to reject a story or its characters.
Enlightenment is actually one of the factors that the Declaration of Independence was modeled after. The Declaration of Independence is what started the revolution. The Brittians heard of the declaration, and didn't want Americans to be independent on their own land.