Texas becomes part of the United States
Texas initially gained independence from Spain in the 1820s and Mexico welcomed foreign settlers to the sparsely populated region. By the 1830s, the number of Americans exceeded the number of resident Mexicans and the Mexican government was unable to regulate the American communities. In the midst of armed conflicts with the Mexican government, Texas declared its independence from Mexico in 1836.
After suffering defeat against Mexican forces at the Alamo, Texas troops led by Sam Houston captured the Mexican stronghold in Santa Anna, bringing an end to the conflict.
In 1844, the U.S. Congress agreed to annex the Texas territory and six months later, on December 29, 1845, Texas was admitted into the United States as the 28th state, a slave state.
Featured Image: A general view of atmosphere as HISTORY celebrates the epic new miniseries 'Texas Rising' with 'Texas Honors' event at the Alamo on May 18, 2015 in San Antonio, Texas. (Photo by Isaac Brekken/Getty Images for HISTORY)