Final answer:
The Maya in the highlands traded obsidian and gold for cotton and other forest goods from the lowlands, utilizing extensive trade networks to acquire resources and facilitate cultural exchanges.
Step-by-step explanation:
The Maya in the highlands traded obsidian and gold for forest goods such as exotic animals and raw materials, as well as cotton from the lowlands. They engaged in long-distance trade, which was crucial for acquiring resources that were not available in their highland terrain, such as salt from Yucatán and dried fish from coastal regions. In addition, Maya's agricultural practices included growing staple crops like beans, squash, and chili peppers. The trade networks established by the Maya were essential for the distribution of these items, facilitating cultural and material exchanges across the region.