The first one was set up in central Mexico in 1786, followed in 1787 by Veracruz, Puebla, Valladolid in Michoacan, Guadalajara, Oaxaca, Guanajuato, Zacatecas, San Luis Potosí, Durango, Sonora, and in 1789 Mérida, the main city in Yucatán.