What Happened in the Mexican-American War? (1845)

The Mexican-American War of 1845

The Mexican-American War of 1845: The Mexican-American War, also known as the Mexican War, was a conflict between the United States and Mexico that lasted from 1846 to 1848. The war arose from the annexation of Texas by the United States in 1845 and led to significant territorial gains for the U.S.

President James K. Polk's Actions

President James K. Polk: In 1845, newly elected U.S. President James K. Polk saw the annexation of Texas as the first step towards a further expansion of the United States. He sent troops to the disputed area and a diplomatic mission to Mexico in order to negotiate a settlement.

Declaration of War

Declaration of War: After Mexican forces attacked U.S. forces in the disputed border region, the United States Congress declared war on Mexico in 1846. The conflict resulted in a series of battles that ultimately ended in U.S. victory.

Treaty of Guadalupe Hidalgo

Treaty of Guadalupe Hidalgo: The war officially ended with the signing of the Treaty of Guadalupe Hidalgo in 1848. Mexico recognized the annexation of Texas and ceded a vast amount of territory to the United States, including present-day California, Nevada, Utah, Arizona, and parts of Colorado, New Mexico, and Wyoming.

Legacy of the War

Legacy: The Mexican-American War had lasting consequences for both countries. It significantly altered the borders of the United States and established the Rio Grande as the boundary between Texas and Mexico. The war also intensified tensions between the North and South over the issue of slavery, ultimately leading to the American Civil War.

What were the key events leading to the Mexican-American War in 1845?

Explanation: In 1845, President James K. Polk's actions, including sending troops to the disputed area and initiating diplomatic negotiations with Mexico, set the stage for the Mexican-American War. The conflict escalated when Mexican forces attacked U.S. forces, leading the United States Congress to declare war on Mexico.

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