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Year 1521 when Mexico became a spanish colony there was some indian civilisations still there like, maya, azteker and the mixteker.
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New Spain became the sovereign nation of Mexico
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Slavery was not abolished at independence in 1821 or with the constitution in 1824, but was eliminated in 1829. Mexico continues to be constituted as a federated republic
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In response to a Mexican massacre of an American army detachment in disputed territory, the U.S. Congress declared war on May 13, 1846; Mexico followed suit on 23 May. The Mexican–American War took place in two theatres: the western (aimed at California) and Central Mexico (aimed at capturing Mexico City) campaigns.
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in 1910. Under Díaz, Mexico's industry and infrastructure was modernized by a strong, stable but autocratic central government. Increased tax revenues and better administration brought dramatic improvements in public safety, public health, railways, mining, industry, foreign trade, and national finances.
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The fraudulent election of 1910 keeping 80-year-old Díaz in power brought opposition elements together, unleashing a 10-year civil war known as the Mexican Revolution (1910–20)