It was , under the Mexican culture , the farthest region of trade . The area provided jaguar pelts , cacao , and quetzal feathers for the ruling classes in the Aztec capital of Tenochtitlan . It was , under the Mexica culture , the farthest region of trade , providing jaguar pelts , cacao , and quetzal feathers for the ruling classes in the Aztec capital of Tenochtitlan .