Mezquital Otomi language in the context of "Pachuca"

Puebla de Zaragoza (Spanish pronunciation: [ˈpweβla]; Nahuatl languages: Cuetlaxcoapan; Mezquital Otomi: Nde'ma), formally Heroica Puebla de Zaragoza, formerly Puebla de los Ángeles during colonial times, or known simply as Puebla, is the seat of Puebla Municipality. It is the capital and largest city of the state of Puebla, and the fourth-largest city in Mexico, after Mexico City, Monterrey, and Guadalajara. A viceregal era planned city, it is located in the southern part of Central Mexico on the main route between Mexico City and Mexico's main Atlantic port, Veracruz—about 100 km (62 mi) east southeast of Mexico City and about 220 km (140 mi) west of Veracruz.

The city was founded in 1531 in an area called Cuetlaxcoapan, which means "where serpents change their skin", between two of the main indigenous settlements at the time, Tlaxcala and Cholula. This valley was not populated in the 16th century, as in the pre-Hispanic period this area was primarily used for the "flower wars" between a number of populations. Due to its history and architectural styles ranging from Renaissance to Mexican Baroque, the city was named a World Heritage Site in 1987. The city is also famous for mole poblano, chiles en nogada and Talavera pottery. However, most of its economy is based on industry.

The Mezquital Valley (Mezquital Otomi: B’ot’ähi) is a series of small valleys and flat areas located in Central Mexico, about 60 kilometres (37 mi) north of Mexico City, located in the western part of the state of Hidalgo. It is part of the Trans-Mexican Volcanic Belt, with altitudes between 1,700 metres (5,600 ft) and 2,100 metres (6,900 ft) above sea level. It is one of Mexico's main semi-arid/area regions, whose native vegetation is dominated by cactus species, mesquite trees, and maguey with pine and oak trees in the highest elevations. It is considered to be part of the northern extension of Mesoamerica, with one major archeological site, Tula, which was the main city of the Toltecs, an important influence for the later Aztecs. However, from the Aztec period to the 20th century, it was sparsely populated and very poor, with one main indigenous ethnicity, the Otomis. In the 20th century, irrigation works were created to take advantage of the water in the Tula River, along with wastewater drained from the Valley of Mexico for agriculture. Today, the valley produces various grains and produce, including one-quarter of all green chili peppers grown in Mexico.