During the first half of the nineteenth century, economic differences between the North and South increased. Cotton was the chief crop of the South, and it represented just over half of all U.S. exports. The profitability of cotton completed the South’s dependence on the plantation system and need for slavery. The North, by then, was an established industrial society. Labor was needed, but not slave labor, so immigration was vital for industries success and thousands migrated to the U.S. from Europe. The immigrants worked in factories and built railroads in the north. The south eventually opposed high tariffs placed on imported goods and increased the price of manufactured articles, while the north demanded high tariffs to protect …show more content…
America began to expand first with the Louisiana Purchase and then by the Mexican War. Question was raised as to whether the new states admitted would be slave states or free states. The Missouri Compromise made a rule that prohibited slavery in states from the former Louisiana Purchase. Then the Compromise of 1850 was created by Henry Clay to deal with the balance between slave and free states, northern and southern interests. Another issue that increased tensions even more was the Kansas-Nebraska Act of 1854. It created two new territories that would allow the states to use popular sovereignty to determine whether they would be free or