Abraham lincoln was the first president

He was the 16th president during the civil war. He was assassinated by John Wilkes Booth.  

Explanation:

(d) rivers.

explanation:

civilizations developed around rivers because their waters provided places to hunt and fish. also, as the rivers flooded, the lands around them became fertile. this allowed them to support farming. this is especially true of the nile river, which flooded the same time each year.

c.) the country needed a stronger central government.