In the Central Valley region of the Southern Mexican state of Oaxaca archeologists discovered evidence of historic settlements. Aztecs from Tenochtitlan on the volcanic plateau to the North around what today is Mexico City first arrived in this region around 1250 AD establishing military rule in the 15th century until the arrival of the Spanish. After the fall of Tenochtitlan, the Spanish took over Oaxaca which led to the eventual decrease of the Native population and the increase in African slaves. The region was then settled by mostly Spanish immigrants from Europe and the African slaves they brought with them. Oaxaca was considered a department after the Mexican War of Independence, but after the fall of emperor Agustín de Iturbide, it became a state in 1824 with José Murguia as its first governor. During the 19th century, Oaxaca was split between liberal and conservative factions. The political and military struggles between the factions resulted in wars and intrigues. A series of major disasters occurred in the state from the 1920s to the 1940s. In the 1940s and 1950s, new infrastructure projects were begun. From the 1980s to the present, there has been much development of the tourism industry in the state.
Pre-historic and pre-Hispanic period
Most of what is known about pre-historic Oaxaca comes from archeological work in the Central Valleys region. Evidence of human habitation dating back to about 11,000 years BC has been found in the Guilá Naquitz cave near the town of Mitla. More finds of nomadic peoples date back to about 5000 BC, with some evidence of the beginning of agriculture. By 2000 BC, agriculture had been established in the Central Valleys region of the state, with sedentary villages. The diet developed around this time would remain until the Spanish Conquest, consisting primarily of harvested corn, beans, chocolate, tomatoes, chili peppers, squash and gourds. Meat was generally hunted and included tepezcuintle, turkey, deer, jabali, armadillo and iguana.
The oldest known major settlements, such as Yanhuitlán and Laguna Zope are located in this area as well. The latter settlement is known for its small figures called “pretty women” or “baby face.” Between 1200 and 900 BC, pottery was being produced in the area as well. This pottery has been linked with similar work done in La Victoria, Guatemala. Other important settlements from the same time period include Tierras Largas, San José Mogote and Guadalupe, whose ceramics show Olmec influence. The major native linguistic group, Oto-Manguean, can be traced back to at least 4400 BC. By 1500 BC, there were nine branches of this language.
There are historical records from the area dating back as far as the 12th century, but except for the Zapotecs and Mixtecs, there is very few records of the native peoples of the state from the pre-Hispanic era into much of the colonial era. By 500 BC, these valleys were mostly inhabited by the Zapotecs, with the Mixtecs on the eastern side. These two groups would be in near constant conflict until the end of the pre-Hispanic period. Archeological evidence indicates that between 750 and 1521, there may have been population peaks of as high as 2.5 million.
The Zapotecs were the earliest to gain dominance over the Central Valleys region. The first major dominion was centered in Monte Albán, which flourished from 500 BC until 750 AD. At its height, Monte Albán was home to some 25,000 people and was the capital city of the Zapotec nation. It remained a secondary center of power for the Zapotecs until the Mixtecs overran it in 1325. The site contains a number of notable features including the Danzantes, a set of stone reliefs and the finding of fine quality ceramics.
Starting from 750 AD large urban centers such as Monte Albán fell across the Oaxaca area and smaller dominions grew and evolved until the Spanish Conquest in 1521. Between 700 and 1300, the Mixtec were scattered among various dominions, including those of Achiutla, Tequixtepec-Chazumba, Apoala and Coixtlahuaca. The Zapotecs occupied a large region from Central Valleys region to the Isthmus of Tehuantepec. However, no major city state like Monte Albán arose again, with villages and city-states remaining small, between 1,000 and 3,000 people with a palace, temple, market and residences. In a number of cases, there were Mesoamerican ball courts as well. These and larger centers also functioned as military fortresses in time of invasion. Important Zapotec and Mixtec sites include Yagul, Zaachila, Inguiteria, Yanhuitlan, Tamazulapan, Tejupan, and Teposcolula. During nearly all of this time, these various entities were at war with one another, and faced the threat of Aztec expansion.