In 1821, Mexico had officially gained independence from Spain. They received land that included Texas. The Mexican government pursued a pro-settlement policy, so they offered land grants to Americans to promote migration.
Welcome to Texas! Here is your land grant.
Texas, Settlement of Texas
In 1835, Mexico adopted a new constitution, creating a stronger, central government. The Americans split into two parties, the War Party and the Peace Party. The War Party starts a rebellion b/c of Santa Anna. Then on March 2nd, 1836, The American Rebels proclaim the independence of Texas.
INDEPENDENCE FOR TEXAS!
Texas can work with the Mexican Republic, we just need political autonomy.
Texas, Republic of Texas
James K. Polk
President James K. Polk supported annexation, but Congress thought that the Annexation of Texas would lead to war. In February 1845, Texas was annexed via a joint resolution, then admitted into the US December 1845.
I fully support that Texas be annexed to the United States!
Washington D.C, Annexation of Texas
Annexation of Texas will lead to war.
The Annexation of Texas caused disputes between Mexico and the US, but that was not the only cause that led to the Mexican-American War. The US and Mexico had disputes over the border of Texas, the US arguing the border should be at Rio Grande whereas Mexico says the border should be at the Nueces river.
Rio Grande River, Mexican-American War
Polk sent John Slidell to negotiate with Mexico, but they refused to meet. The Mexican War officially started when supposedly Mexicans invaded territory and killed American soldiers stationed by President Polk. From April 25th, 1846 to February 3rd, 1848, the US and Mexico fought, the US consistently victorious. One of the most famous battles known from this war is the Alamo. The war ends with The Treaty Of Guadalupe Hidalgo.
James K. Polk
Washington D.C, Mexican-American War
"American Blood on American Soil"
The Mexican-American War ended with the Treaty of Guadalupe Hidalgo. The Treaty was ratified by both national congresses, allowing US assumption of citizen's claims against Mexico and leads to the Mexican Cession and the border of Texas to be at the Rio Grande river.. The treaty says that Mexico will cede New Mexico, Utah, Nevada, Arizona, California, Texas and Western Colorado to the United States.