The Louisiana Purchase made the United States twice the size it was before the purchase. They had to decide whether or not the states would be free or slave states, resulting in sectionalism.
B. american indians gained access to the land new englanders lived on
Odoacer I think, Im not entirely sure
The president : Donald Trump
"The Constitution provides that the president "shall have Power, by and with the Advice and Consent of the Senate, to make Treaties, provided two-thirds of the Senators present concur" (Article II, section 2)."
https://www.senate.gov/artandhistory/history/common/briefing/Treaties.htm
Hope this helps
The answer among these options that describes a primary cause of the Neolithic Revolution is C) the extinction of animals that people hunted.
