spoken some 5,000 years ago, known as Proto-Mayan. The Maya had been in a stable decline when Spanish conquistadors arrived in 1517 AD. From 200 to 800 AD the Maya were thriving and making great technological advances. They created a system for recording numerals and hieroglyphs that was more complex and efficient than what had come before. They migrated northward and eastward to the Yucatán peninsula from Palenque, Jaina, and Bonampak. In the 12th and 13th centuries, a coalition emerged in the Yucatán peninsula among three important centers, Uxmal, Chichen Itza, and Mayapan. The society grew and the people were able to practice intellectual and artistic achievement during a period of peace. When war broke out, such progress was stalled. By the 15th century, Mayan Toltec collapsed and was abandoned. The Genoese explorer Christopher Columbus traded with Maya merchants off the coast of Yucatán during his expedition for the Spanish Crown in 1502, but he never made landfall. During the decade following Columbus's first contact with the Maya, the first Spaniards to set foot on Yucatán soil did so by chance, as survivors of a shipwreck in the Caribbean. The Maya ritually sacrificed most of these men, leaving just two survivors, Gerónimo de Aguilar and Gonzalo Guerrero, who somehow rejoined other Spaniards. In 1519, Aguilar accompanied Hernán Cortés to the Yucatán island of Cozumel, and also took part in the conquest of central Mexico. Guerrero became a Mexican legend as father of the first Mestizo: by Aguilar's account, Guerrero "went native". He married native women, wore traditional native apparel, and fought against the Spanish. Francisco de Montejo's military incursion of Yucatán took three generations and three wars with extended fighting, which lasted a total of 24 years. As the Spanish colonists settled more areas, in the 18th century they developed the lands for large maize plantations and cattle farms. The elite lived in haciendas and exported natural resources as commodities. The Maya were subjects of the Spanish Empire from 1542 to 1821. During the colonization of the Yucatán peninsula, the Spanish believed that in order to evangelize and govern the Maya, they needed to reform Yucatec Maya. They wanted to shape it to serve their ends of religious conversion and social control. Spanish religious missionaries undertook a project of linguistic and social transformation known as reducción (from Spanish reducir). The missionaries translated Catholic Christian religious texts from Spanish into Yucatec