The name Coahuila derives from native terms for the region, and has been known by variations such as Cuagüila and Cuauila. Some historians believe that this means "flying serpent", "place of many trees", or "place where serpents creep". The official name of the state is Coahuila de Zaragoza, in honor of General
Ignacio Zaragoza. The Spanish explored the north of Mexico some decades after their victory in
Tenochtitlan, the capital of the Aztecs. Such exploration was delayed because the northern climate was harsher and there was no gold. The first Spanish settlement in the region now called Coahuila was at
Minas de la Trinidad in 1577. Saltillo was settled in 1586, to form part of the province of
Nueva Vizcaya of the Vice-royalty of
New Spain. Later it became one of the first provinces of
Nueva Extremadura to be explored by Europeans. Among the 16th century settlers of Saltillo and other communities in Nueva Vizcaya were
Tlaxcalans, who founded an independent community bordering Saltillo, called
San Esteban de Nueva Tlaxcala.
Coahuila y Tejas was one of the constituent states of the newly independent
United Mexican States under their
1824 Constitution, and included
Texas, Coahuila and
Nuevo León. Later in the same year Nuevo León was detached, but Texas remained 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 mostly in Coahuila. It was the largest privately owned property in the Americas. In the 1840s and 1850s, Coahuila was the target of frequent
Comanche raids. On February 19, 1856,
Santiago Vidaurri annexed Coahuila to his state,
Nuevo León, but it regained its separate status in 1868. During the
Mexican Revolution,
Francisco Villa attacked the city of
Torreón. On April 4, 2004, the border city of Piedras Negras was flooded. More than 30 people died and more than 4,000 lost their homes. In 2007 Coahuila became the first state in Mexico to offer
civil unions (Pacto Civil de Solidaridad) to same-sex couples. == Archaeological finds ==