El Estado de México, su historia y su gente, Capítulo IV (2011)

After the 1910 Revolution, a capable political class governed the State of Mexico, encouraging its economic development until it had become the state with the highest growth nationwide. Urban expansion and proximity to Mexico City gave rise to a megalopolis that would eventually comprise Querétaro, Cuernavaca, Pacuca, Tlaxcala, and Puebla. Although there are considerable drawbacks in terms of housing, health, and education, and more recently, broad industrial revamping, the State of Mexico will continue to perform a key role in national progress. Today, the State of Mexico is a laboratory in which the possible destinies of the nation are being tested.