Answer:
Secession was the act by which a state left the Union. The Secession Crisis of late 1860 and early 1861 led to the Civil War when southern states seceded from the Union and declared themselves a separate nation, the Confederate States of America. There is no provision for secession in the U.S. Constitution.
Explanation:
In politics, the patronage system which was based around the spoils of war mentality caused problems of having unqualified and corrupt officials in government positions because they would get there only because they were close to the ruling party or the ruler. This was common before the merit system.
Obviously Abraham Lincoln. He was the president of the United States, and had the biggest impact on the North's victory.
Industrialization created new jobs which helped to cause Urbanization, transportation and communication allowed goods to move to new markets, steamboat moved goods and people quickly, manufacturing, raw materials, and Bessemer steel process improved productivity.
