The 1930s transformed Mexico from revolutionary chaos into a structured, nationalist state under the Partido Nacional Revolucionario (PNR) (later PRI).
| Year | Key Events |
|---|---|
| 1930 | PNR founded (Calles); Ortiz Rubio elected; joins League of Nations. |
| 1931 | Palace of Fine Arts construction begins (Mexico City). |
| 1932 | Rodríguez president; Cristero War ends (Church-state truce). |
| 1933 | Cárdenas elected; land reform begins (millions of hectares → ejidos); oil/rail nationalization starts. |
| 1934 | Hosts FIFA World Cup (Italy wins). |
| 1935 | Federal Labor Law enacted (unions, strikes, 8-hr day). |
| 1936 | Oil expropriation (17 foreign companies → PEMEX); founding UN member. |
| 1937 | National Polytechnic Institute founded; Agrarian Code codifies land reform. |
| 1938 | Ávila Camacho elected; Mexico enters WWII (Allies) after tanker sinkings. |
| 1939 | Social Security Law (IMSS precursor). |
The 1930s made modern Mexico—authoritarian, nationalist, oil-fueled, PRI-dominated for 70 years.