Answer
Venustiano Carranza, the leader of the Constitutionalist faction during the Mexican Revolution, was initially viewed by Álvaro Obregón as a conservative figure. Obregón's disillusionment stemmed from Carranza's increasingly authoritarian rule, his opposition to social reforms, and his unwillingness to address the concerns of the peasant and working classes. This led Obregón to join forces with other revolutionary leaders to overthrow Carranza and establish a more progressive government.