Mexico gained its independence from Spain in 1821 after a long and destructive war.

The early post-independence period was marked by political instability and economic struggles.

In the Mexican-American War (1846-1848), Mexico lost nearly half of its territory to the United States.

The mid-19th century saw a period of liberal reform known as 'La Reforma,' which was interrupted by a French intervention and the brief rule of Emperor Maximilian.

The long dictatorship of Porfirio Díaz (1876-1911), known as the 'Porfiriato,' brought modernization and economic growth but also increased social inequality.

This led to the outbreak of the Mexican Revolution in 1910, a complex and violent civil war.

The revolution resulted in the Mexican Constitution of 1917, a progressive document that established social rights and land reform.

For much of the 20th century, Mexico was dominated by a single political party, the Institutional Revolutionary Party (PRI).

The late 20th and early 21st centuries have seen a transition to a multi-party democracy.

Mexico's history is defined by its struggle for sovereignty, its complex relationship with the United States, and its rich blend of indigenous and Spanish cultures.