a part of the state until 1836, when it seceded to form the Republic of Texas. Monclova was the capital of the state from 1833 to 1835.

In 1840, Coahuila briefly became a member of the short lived Republic of the Rio Grande. In the mid-19th century, the Sánchez Navarro family owned a ranch of 16500000 acre mostly in Coahuila. It was the largest privately owned property in the Americas.