The Caste War of Yucatán (1847–1901) began with the revolt of native Maya people of Yucatán, Mexico against the population of European descent, called Yucatecos, who held political and economic control of the region. A lengthy war ensued between the Yucateco forces in the north-west of the Yucatán and the independent Maya in the south-east. It officially ended with the occupation of the Maya capital of Chan Santa Cruz by the Mexican army in 1901, although skirmishes with villages and small settlements that refused to acknowledge Mexican control continued for more than a decade.

In Spanish colonial times, Yucatán (like most of New Spain) was under a legal caste system, with peninsulares (officials born in Spain) at the top, the criollos of Spanish descent in the next level, followed by the mestizo population, then the native hidalgos (descendants of the Pre-Columbian nobility who had collaborated with the Spanish conquest of Yucatán) and at the bottom were the other native indios.

Although Spanish peninsulares frequently left Mexico following the patriots victory, Yucatan's Spanish population largely remained and continued to exercise local rule. Although there had long been tensions between the peninsulares and criollos in the Yucatan as elsewhere, the two groups cooperated because they feared the potential power of the mestizos and the natives.

Yucatán (Spanish pronunciation: [ʝukaˈtan]), officially the Free and Sovereign State of Yucatán (Spanish: Estado Libre y Soberano de Yucatán), is one of the 31 states which, with the Federal District, comprise the 32 Federal Entities of Mexico. It is divided in 106 municipalities, and its capital city is Mérida.

It is located in Southeastern Mexico, on the north part of the Yucatán Peninsula. It is bordered by the states of Campeche to the southwest, Quintana Roo to the northeast and the Gulf of Mexico lies off its north coast.

Before the arrival of Spaniards to the Yucatán Peninsula, the name of this region was el Mayab. In Mayan language, "ma' ya'ab" is translated as "a few". It was a very important region for the Mayan civilization, which reached the peak of its development on this place, where they founded the cities of Chichen Itza, Izamal, Motul, Mayapan, Ek' Balam and Ichcaanzihóo (also called T'Hó), now Mérida.

After the Spanish conquest, Yucatán Peninsula was a single administrative and political entity, the Captaincy General of Yucatán. Following independence and the breakup of the Mexican Empire in 1823, the first Republic of Yucatán was proclaimed which then was voluntarily annexed to the Federal Republic of United Mexican States on December 21, 1823. Later on March 16, 1841, as result of cultural and political conflicts around the federal pact, Yucatán declared independence from Mexico to form a second Republic of Yucatán, but eventually on July 14, 1848, Yucatán was definitely rejoined to Mexico. In 1858, in the middle of the caste war, the state of Yucatan was divided for the first time, establishing Campeche as separate state (officially in 1863). During the Porfiriato, in 1902, the state of Yucatan was divided again to form the Federal territory that later became the present state of Quintana Roo.

Felipe Carrillo Puerto (November 8, 1872 – January 3, 1924) was a Governor of the Mexican state of Yucatán. He was born in the town of Motul, Yucatán, and was of partly indigenous Mayan background; he was rumored to be a descendant of the Nachi Cocom dynasty of Mayapan. He was a socialist who favored land reform, women's suffrage, and rights for the indigenous Mayan people. He had a romance with a United States journalist, Alma Reed of San Francisco, California, which was commemorated in the song "Peregrina". Carrillo Puerto died by assassination in January 1924.

Felipe Carrillo Puerto was called the Red Dragon with the Eyes of Jade by his enemies and the Apostle of the Indians by those who loved him. He was one of 14 children, 13 of whom lived to adulthood. All but one of the Carrillo Puerto siblings worked to better the lives of the Mayan people. When Felipe was killed, three of his brothers, Wilfrido, Benjamin, and Edesio, were killed with him, as well as eight of their friends.

The movie Peregrina regarding his life was made in 1974 starring Antonio Aguilar.