The event that started the war with Mexico was the annexation of Texas by the United States in 1845. This annexation led to tensions between Mexico and the U.S. as Mexico considered Texas to be part of its territory.
Here's a breakdown of how the annexation of Texas triggered the war:
1. Annexation of Texas: The U.S. Congress passed a joint resolution to admit Texas as the 28th state of the Union in 1845, following its declaration of independence from Mexico in 1836 and subsequent period as an independent republic. Mexico did not recognize the independence of Texas and viewed the annexation as a violation of its sovereignty.
2. Border Dispute: The annexation of Texas created a border dispute between Mexico and the United States, as Mexico claimed the Nueces River as its northern boundary while the U.S. argued that the Rio Grande marked the border of Texas.
3. Clash at the Border: Tensions escalated when U.S. troops were stationed at the disputed border area near the Rio Grande, leading to a clash between Mexican and American forces in April 1846.
4. Declaration of War: Following the skirmish, U.S. President James K. Polk asked Congress to declare war on Mexico, citing the attack on American troops as a reason. Congress approved the declaration of war on May 13, 1846.
5. Mexican-American War: The conflict that ensued, known as the Mexican-American War (1846-1848), resulted in significant territorial gains for the United States, including the capture of Veracruz and Mexico City.
In summary, the annexation of Texas by the United States served as the primary catalyst that initiated the war with Mexico, leading to a series of events that culminated in armed conflict and territorial changes between the two nations.
