The 2010 United Nations Climate Change Conference convenes in Cancún

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Cancun

The leaders of México, Canada and the United States sign the North American Free Trade Agreement (NAFTA)

An earthquake measuring 8.1 on the Richter scale strikes central Mexico, inflicting severe damage on Mexico City.

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Mexico City

Construction begins on the city of Cancún, creating a new tourist destination on the Yucatán Peninsula

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Cancun

Mexico and other Latin American nations sign the Treaty of Tlatelolco in México City, making Latin American a nuclear-weapons-free zone

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Mexico City

Mexico organizes Escuadrón 201 of the Mexican Air Force, which trains and fights alongside U.S. fighter pilots during World War II.

President Lázaro Cárdenas, acting under the authority of Article 27 of the Mexican Constitution, expropriates all foreign-owned oil corporations in México, creating Petróleos Mexicanos (Pemex)

Mexico ratifies the Constitution of 1917, which guarantees social rights, agrarian reform and the rights of workers.

Porfirio Díaz resigns as president of Mexico after more than 30 years in power. He goes into exile days later.

In Villa de Ayala, Morelos, Emiliano Zapata takes up arms against the dictatorship of Porfirio Díaz.

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Morelos

Francisco Madero issues the Plan de San Luis Potosí, calling for the overthrow of the regime of Porfirio Díaz and launching the Mexican Revolution

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San Luis Potosí

Mexican forces defeat the French Army at the Battle of Puebla, a turning point in the struggle against foreign occupation

Benito Juárez becomes President of México. Juarez, a Zapotec Indian, becomes the first indigenous head of state in the Western Hemisphere

Mexico ratifies the Constitution of 1857, which guarantees freedom of religion within a secular government.

Iturbide and his army enter Mexico City, concluding the War of Independence

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Mexico City