They were both huge and powerful city-states, with many allies and vassal states. They argued about money and land, and the rivalry lasted more than one hundred and thirty years. The rivalry tore the united city-states apart and they began to fight, dragging their vassal states and allies with them. The fighting went back and forth, until Dos Pilas, a city controlled by Tikal, was conquered by Calakmul. The warring city-state attacked Tikal and destroyed it. The economy was destroyed and all the city-states began to fight each other