Around AD 400, in the Early Classic period, Montana replaced Balberta as the regional capital. The investigating archaeologists consider that Montana was founded as a colony by the great metropolis of Teotihuacan in the distant Valley of Mexico in order to supply that city with locally produced products such as cacao, cotton and rubber and to provide a trade route to the great highland city of Kaminaljuyu and to the Maya lowlands across the Sierra Madre de Chiapas.