Read this: Zapatist forces, which were based in neighboring Morelos had strengths in the southern edge of the Federal District, which included Xochimilco, Tlalpan, Tláhuac and Milpa Alta to fight against the regimes of Victoriano Huerta and Venustiano Carranza. After the assassination of Carranza and a short mandate by Adolfo de la Huerta, Álvaro Obregón took power. After willing to be re-elected, he was killed by José de León Toral, a devout Catholic, in a restaurant near La Bombilla Park in San Ángel in 1928. Plutarco Elias Calles replaced Obregón and culminated the Mexican Revolution.

Where were the Zapatist forces from?
What is the answer? (If it cannot be answered, return "unanswerable")
Morelos