1830-1907 18thcentury 20thcentury agriculture agricultureandstate antiquities atlantis aztecs buelna congresses economicaspects economicconditions education eustaquio geographical geographicalmyths governors higher history historyjesuits indian indiansofmexico landreform landtenure landuse mexico names ruralconditions ruraldevelopment ruralpoor socialchange socialconditions socialmovements sonora(state)