Answer:
Election
Explanation:
The legislative branch of the federal government, composed primarily of the U.S. Congress, is responsible for making the country's laws. The members of the two houses of Congress—the House of Representatives and the Senate—are elected by the citizens of the United States.
It wasn't so much the Civil War, but the expansion of the United States that led to the Civil War, that brought about the Second Industrial Revolution, since this expansion brought a need for massive amounts of railroad materials.
