The Maya are thought to have been in Belize and the Yucatán region since the second millennium BC; however, much of Belize's original Maya population was wiped out by conflicts between constantly warring tribes. There were many who died of disease after contact and invasion by Europeans. Three Maya groups now inhabit the country: The Yucatec (who came from Yucatán, Mexico, to escape the savage Caste War of the 1840s), the Mopan (indigenous to Belize but were forced out to Guatemala by the British for raiding settlements; they returned to Belize to evade enslavement by the Guatemalans in the 19th century), and Q'eqchi' (also fled from slavery in Guatemala in the 19th century). The latter groups are chiefly found in the Toledo District. The Maya speak their native languages and Spanish, and are also fluent in English and Belize Kriol.