Republic of Texas

State · 1836–1845 CE · at its largest around 1836 CE

An independent republic formed after Texas broke away from Mexico in 1836; its annexation by the United States helped spark the Mexican–American War.

On its lands while it lasted

Houston (1836 CE): Capital of Republic of Texas (1837–1839).
Battle of the Alamo (1836 CE): Mexican forces under Santa Anna overran the Alamo mission in San Antonio during the Texas Revolution, killing its defenders.
Washington-on-the-Brazos (c. 1836–1845 CE): Capital of Republic of Texas (1836–1845).