Mexican Texas is the name given by Texas history scholars to Texas during the period between 1821 and 1836, when Texas was an integral part of Mexico. The period began with Mexico's victory over Spain in its war of independence in 1821. For the first several years of its existence, Mexican Texas operated very similarly to Spanish Texas. The 1824 Constitution of Mexico joined Texas with Coahuila to form the state of Coahuila y Tejas.