sentences:  Madero's presidency proved to be short-lived, as he alienated almost all of his supporters by refusing to enact land reforms and developing weak and unsatisfactory programs for social change.General Victoriano Huerta eventually staged a coup that overthrew Madero and installed himself as president.His authoritarian and brutal methods of ruling, however, soon united the Constitutionalists, who were now being led by Venustiano Carranza, with Zapata and Villa in overthrowing Huerta.