| Inca laborers harvest potatoes using an Andean foot plow, or chaquitacalla, and a hoe in this drawing from Nueva Coronica y Bien Gobierno, an early 17th-century book by Native American writer Felipe Guaman Poma de Ayala. The book, written as a 1,200-page letter to the king of Spain, details Inca folkways. As the dominant group within the Inca Empire, the Quechua spread their language and culture throughout the Andes region during the 15th century. |