The mayan COLLAPSE

The once-thriving Mayan civilization collapsed because they left their homes. They left their homes because of the erosion. As the population of the Copan Valley grew, they needed more and more food. They started overfarming the hillside to meet the insatiable demands of the people. The food supply was also decreasing slightly, meaning a worse crop every year. The erosion and the hunger drove most of the Mayan Civilization out of the valley and into a new home in the Yucatan Peninsula during the Postclassic Period