Before the 1910 Mexican Revolution that overthrew Porfirio Díaz, most of the land was owned by a single elite ruling class. Legally there was no slavery or serfdom; however, those with heavy debts, native wage workers, or peasants, were essentially debt-slaves to the landowners. A small percentage of rich landowners owned most of the country's farm land. With so many people brutally suppressed, revolts and revolution were common in Mexico. To relieve the Mexican peasant's plight and stabilize the country, various leaders tried different types of agrarian land reform.