The Constitutionalist Army of First Chief Venustiano Carranza was represented by Álvaro Obregón and Lucio Blanco.
[1] In August, due to the victories of Venustiano Carranza, interim president Francisco S. Carbajal finally offered an unconditional surrender.
[2] Accompanied by a Brazilian minister, a French delegate and a U.S. representative, Carbajal went to Teoluyacan and attempted to discuss terms.
Venustiano Carranza refused to allow the continued existence of the Federal Army, the fatal flaw of Madero's regime.
[3][2] Realizing that the Zapatistas were a continuing threat, Obregón allowed Federal soldiers to remain in place in the southern part of Mexico City, closest to Zapata's stronghold in Morelos, until the Constitutionalist Army could take control.