City (pop., 2000: 669,842), central Nuevo León state, northeastern Mexico. It lies about 670 ft (200 m) above sea level on the Santa Catarina River just east of Monterrey. It serves as the commercial centre of an agricultural area
National park, western Texas, U.S. Established in 1972, it occupies an area of 86,416 acres (34,998 hectares) east of El Paso. It is centred on two peaks: Guadalupe Peak, which reaches 8,751 ft (2,667 m), and El Capitan, which rises to 8,078 ft (2,462 m). The park is an area of great geologic interest, with a major Permian limestone fossil reef
(Feb. 2, 1848) Treaty between the U.S. and Mexico that ended the Mexican War, named for the Mexico City neighbourhood where it was signed. It drew the U.S.-Mexico boundary at the Rio Grande and the Gila River. For $15 million the U.S. received more than 525,000 sq mi (1.36 million sq km) of land and agreed to settle the more than $3 million in claims made by U.S. citizens against Mexico. By leaving Mexicans unsure of their country's future and reopening the question of the expansion of slavery in the vast territory ceded to the U.S., the treaty was a factor in the civil wars that followed in both countries