Answer:
B.Harsh winters and Rocky,hilly land.
Explanation:
That's A, President Franklin D. Roosevelt. The topic you're asking about is extremely important. I would delve into a bit more research. I can't remember why FDR but I did the test a while back and got an A.
Answer: their use of roads
Explanation:
The correct answer is the Mississippians. They were a Native American group that was commonly found in the Mississippi area between 800 AD and 1600 AD but some tribes were inspired culturally by them and kept their culture alive as far as the 18th century.