Texas was originally owned by Mexico. The United States government desired the piece of land planning to accomplish Manifest Destiny. The Mexican-American war took place in order to own the land, and the Texas was soon liberated.
Mexico controlled the territory until 1836 when Texas won its independence, becoming an independent Republic. In 1845 it joined the United States as the 28th state. The state's annexation set off a chain of events that caused the Mexican–American War in 1846.
Texas became part of the U.S. through the annexation in 1845, following its independence from Mexico in 1836. The desire for annexation, driven by feelings of Manifest Destiny, led to the Mexican-American War, which ended with the Treaty of Guadalupe Hidalgo in 1848. This treaty confirmed U.S. ownership of Texas and expanded its territory significantly, paving the way for further conflicts over slavery and territorial disputes.
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