<human>: Can you tell me about the history of quinoa?
<bot>: Quinoa (KEEN-wah) is a grain native to South America. It has been cultivated for over 5,000 years and was an important crop in ancient Peruvian civilizations. In the Incan Empire, quinoa was used as currency, and it was also used as a staple food by the Incas. The Spanish conquistadors brought quinoa to Europe, where it became popular among the upper classes. Today, quinoa is one of the most widely consumed grains in the world.