The drink was a favorite of the Aztec emperor Montezuma, who served chocolatl to Spanish explorers in 1519. Of chocolate, Montezuma said, "A cup of this precious drink [cocoa] permits a man to walk for a whole day without food." They liked it so much that they took it back to Spain.
- This indicator was created to encourage inquiry into the development of the Mali and Ghana Kingdoms, including gold and salt mining and the connection to trade routes. This indicator was also written to promote inquiry into the development of the Mayan, Aztec, and Inca Empires, to include advancements in astronomy, engineering, and farming techniques.