Answer:
Hope this helps!!
Explanation:
John Slidell, a Democratic congressman from Louisiana, was sent to Mexico by President James K. Polk in November 1845 to secure a boundary adjustment between the United States and Mexico. Polk authorized Slidell to offer Mexico up to $50 million for its vast northern territories. The mission failed when the Mexican government refused to accept his credentials. The United States declared war on Mexico on May 13, 1846, and Slidell returned in January 1847 and resigned.
The answer is c, because the north abolished slavery, and the south still had it until the end of the civil war
I believe the answer is: the U.S.S. Maine being blown up
U.S.S maine was one of the battleship which belonged to united states, which was attacked by the Spanish during Cuba's uprising against the Spanish government. This create a tension between united states and Spain which resulted in United States helping Cuba to obtain their independence.
