The Mexican-American War
The Mexican-American War was fought between the United States and Mexico from 1846 to 1848, resulting in significant American territorial expansion across the present-day American Southwest.
Ending with Mexico ceding roughly half its territory to its northern neighbor, this conflict dramatically reshaped the map of North America and set the stage for later American westward expansion.
Disputed Territorial Claims
The war arose from disputed territorial claims, particularly regarding Texas, which the United States had annexed despite Mexican objections.
Significant Territorial Gains
The war concluded with the Treaty of Guadalupe Hidalgo, through which Mexico ceded vast territories including present-day California, Nevada, Utah, and parts of several other states.
A Controversial Conflict
The war generated significant domestic controversy in the United States, with critics including a young congressman named Abraham Lincoln questioning its justification.
Reshaping North America
The war's outcome dramatically reshaped the map of North America, setting the stage for subsequent American westward expansion and later sectional tensions over slavery in new territories.
