Following the Mexican Revolution (1910–1920), the 1917 Constitution enshrined land reform in Article 27, but implementation lagged. It wasn't until President Lázaro Cárdenas (1934–1940) that large-scale redistribution accelerated.
Under Cárdenas, the government expropriated large haciendas and distributed over 18 million hectares to peasants, organized primarily into ejidos—collective land grants where communities held usufruct rights rather than individual title. The state also provided:
This reform broke the power of the landed oligarchy, mobilized rural support for the ruling party (precursor to the PRI), and boosted staple crop production. However, ejido fragmentation, lack of collateral for loans, and later neoliberal reforms (1992 Article 27 amendment allowing privatization) created long-term productivity challenges. Still, it remains a landmark in Latin American land reform.