Constitution of Mexico in the context of "Land reform in Mexico"

Mexico, officially the United Mexican States, is a country in North America. It is the northernmost country in Latin America and borders the United States to the north, and Guatemala and Belize to the southeast; while having maritime boundaries with the Pacific Ocean to the west, the Caribbean Sea to the southeast, and the Gulf of Mexico to the east. Mexico covers 1,972,550 km (761,610 sq mi), and is the thirteenth-largest country in the world by land area. With a population exceeding 130 million, Mexico is the tenth-most populous country in the world and is home to the largest number of native Spanish speakers. Mexico City is the capital and largest city, which ranks among the most populous metropolitan areas in the world.

Human presence in Mexico dates back to at least 8,000 BC. Mesoamerica, considered a cradle of civilization, was home to numerous advanced societies, including the Olmecs, Maya, Zapotecs, Teotihuacan civilization, and Purépecha. Spanish colonization began in 1521 with an alliance that defeated the Aztec Empire, establishing the colony of New Spain with its capital at Tenochtitlan, now Mexico City. New Spain became a major center of the transoceanic economy during the Age of Discovery, fueled by silver mining and its position as a hub between Europe and Asia. This gave rise to one of the largest multiracial populations in the world. The Peninsular War led to the 1810–1821 Mexican War of Independence, which ended Peninsular rule and led to the creation of the First Mexican Empire, which quickly collapsed into the short-lived First Mexican Republic. In 1848, Mexico lost nearly half its territory to the American invasion. Liberal reforms set in the Constitution of 1857 led to civil war and French intervention, culminating in the establishment of the Second Mexican Empire under Emperor Maximilian I of Austria, who was overthrown by Republican forces led by Benito Juárez. The late 19th century saw the long dictatorship of Porfirio Díaz, whose modernization policies came at the cost of severe social unrest. The 1910–1920 Mexican Revolution led to the overthrow of Díaz and the adoption of the 1917 Constitution. Mexico experienced rapid industrialization and economic growth in the 1940s–1970s, amidst electoral fraud, the Tlatelolco massacre, and economic crises. The late 20th century saw a shift towards neoliberalism, marked by the signing of the North American Free Trade Agreement (NAFTA) in 1994, amidst unrest in Chiapas.

The Mexican Revolution (Spanish: Revolución mexicana) was an extended sequence of armed regional conflicts in Mexico from 20 November 1910 to 1 December 1920. It has been called "the defining event of modern Mexican history". It saw the destruction of the Federal Army, its replacement by a revolutionary army, and the transformation of Mexican culture and government. The northern Constitutionalist faction prevailed on the battlefield and drafted the present-day Constitution of Mexico, which aimed to create a strong central government. Revolutionary generals held power from 1920 to 1940. The revolutionary conflict was primarily a civil war, but foreign powers, having important economic and strategic interests in Mexico, figured in the outcome of Mexico's power struggles; the U.S. involvement was particularly high. The conflict led to the deaths of around one million people, mostly non-combatants.

Although the decades-long regime of President Porfirio Díaz (1876–1911) was increasingly unpopular, there was no foreboding in 1910 that a revolution was about to break out. The aging Díaz failed to find a controlled solution to presidential succession, resulting in a power struggle among competing elites and the middle classes, which occurred during a period of intense labor unrest, exemplified by the Cananea and Río Blanco strikes. When wealthy northern landowner Francisco I. Madero challenged Díaz in the 1910 presidential election and Díaz jailed him, Madero called for an armed uprising against Díaz in the Plan of San Luis Potosí. Rebellions broke out first in Morelos (immediately south of the nation's capital city) and then to a much greater extent in northern Mexico. The Federal Army could not suppress the widespread uprisings, showing the military's weakness and encouraging the rebels. Díaz resigned in May 1911 and went into exile, an interim government was installed until elections could be held, the Federal Army was retained, and revolutionary forces demobilized. The first phase of the Revolution was relatively bloodless and short-lived.

Mexico is a federal republic composed of 32 federative entities (Spanish: entidades federativas): 31 states and Mexico City. According to the Constitution of Mexico, the states of the federation are free and sovereign in all matters concerning their internal affairs. Since 2016, Mexico City has been a fully autonomous entity on par with the states. Each state federative entity has its own congress and constitution.

Indigenous peoples of Mexico (Spanish: Pueblos indígenas de México), also known as Native Mexicans (Spanish: Mexicanos nativos), are those who are part of communities that trace their roots back to populations and communities that existed in what is now Mexico before the arrival of Europeans.

The number of Indigenous Mexicans is defined through the second article of the Mexican Constitution. The Mexican census does not classify individuals by race, using the cultural-ethnicity of Indigenous communities that preserve their Indigenous languages, traditions, beliefs, and cultures. As a result, the count of Indigenous peoples in Mexico does not include those of mixed Indigenous and European heritage who have not preserved their Indigenous cultural practices. Genetic studies have found that most Mexicans are of partial Indigenous heritage. According to the National Indigenous Institute (INI) and the National Institute of Indigenous Peoples (CDI), in 2012 the Indigenous population was approximately 15 million people, divided into 68 ethnic groups. The 2020 Censo General de Población y Vivienda reported 11,132,562 people living in households where someone speaks an Indigenous language, and 23,232,391 people who were identified as Indigenous based on self-identification.

A Mexican State (Spanish: Estado), officially a Free and Sovereign State (Spanish: Estado libre y soberano), is a constituent federative entity of Mexico according to the Constitution of Mexico. Currently there are 31 states, each with its own constitution, government, state governor, and state congress. In the hierarchy of Mexican administrative divisions, states are further divided into municipalities. Currently there are 2,462 municipalities in Mexico.

Although not formally a state, political reforms have enabled Mexico City (Spanish: Ciudad de México), the capital city of the United Mexican States to have a federative entity status equivalent to that of the states since January 29, 2016.

Municipalities (Spanish: Municipios) are the administrative divisions under the states of Mexico according to the constitution. Municipalities are considered as the second-level administrative divisions by the federal government. However, some state regulations have designed intrastate regions to administer their own municipalities. Municipalities are further divided into localities in the structural hierarchy of administrative divisions of Mexico. As of December 2024, there are 2,462 municipalities in Mexico.

In Mexico, municipalities should not be confused with cities (Spanish: ciudades). Cities are locality-level divisions that are administered by the municipality, although some larger cities are consolidated with its own municipality and form a single level of governance. In addition, the 16 boroughs of Mexico City are considered municipality equivalent, this makes the total number of municipality-level divisions to be 2,478.

The president of Mexico (Spanish: presidente de México), officially the president of the United Mexican States (Spanish: presidente de los Estados Unidos Mexicanos), is the head of state and head of government of Mexico. Under the Constitution of Mexico, the president heads the executive branch of the federal government and is the commander in chief of the Mexican Armed Forces. The office, which was first established by the federal Constitution of 1824, is currently held by Claudia Sheinbaum, who was sworn in on October 1, 2024. The office of the president is considered to be revolutionary, in the sense that the powers of office are derived from the Revolutionary Constitution of 1917. Another legacy of the Mexican Revolution is the Constitution's ban on re-election. Mexican presidents are limited to a single six-year term, called a sexenio. No one who has held the post, even on a caretaker basis, is allowed to run or serve again. The constitution and the office of the president closely follow the presidential system of government.

The Federal government of Mexico (alternately known as the Government of the Republic or Gobierno de la República or Gobierno de México) is the national government of the United Mexican States, the central government established by its constitution to share sovereignty over the republic with the governments of the 31 individual Mexican states, and to represent such governments before international bodies such as the United Nations.

The Mexican federal government has three branches: executive, legislative, and judicial and functions per the Constitution of the United Mexican States, as enacted in 1917, and as amended. The executive power is exercised by the executive branch, which is headed by the president and her Cabinet, which, together, are independent of the legislature. Legislative power is vested upon the Congress of the Union, a bicameral legislature comprising the Senate and the Chamber of Deputies. Judicial power is exercised by the judiciary, consisting of the Supreme Court of Justice of the Nation, the Council of the Federal Judiciary, and the collegiate, unitary, and district courts.