-
War With Mexico
President Polk initiates war with Mexico, as a result Mexicans are forced to relinquish the Rio Grande. -
Treaty of Guadalupe Hidalgo
Mexico was forced to relinquish its land. Rio Grande became Texas southernmost boundary. -
Nebraska Act
The Nebraska Act leads to war between pro-slavery and anti-slavery supporters. -
Dred Scott
A Supreme Court decision determines that slaves were not U.S. citizens and declared that Congress had no authority to ban slavery. -
Disunion
John Brown led an attack on federal arsenals in an attemp to instigate a rebellion of slaves. The southerners became increasingly hostile toward the north and abolitionist. -
Attack on Fort Sumter
The Civil War began as a result of political tensions, opposition to key issues and the formation of the Confederation.