sentences:  Yaxha had a long history of occupation with the first settlement being founded sometime in the Middle Preclassic period (c. 1000–350 BC).It developed into the largest city in the eastern Petén lakes region during the Late Preclassic (c. 350 BC – AD 250) and expanded into an enormous city during the Early Classic (c. AD 250–600).At this time, in common with other sites in Petén, it shows strong influence from the distant metropolis of Teotihuacan in the Valley of Mexico.