The Inca Empire existed for fewer than 100 years, yet ruled more subjects than either the Aztecs or the Maya and occupied a territory stretching nearly 3000 miles. The Incas left no system of writing; what we know of them has been gleaned from the archaeological record and accounts written following the Spanish invasion. In this A-to-Z encyclopedia, Gary Urton and Adriana von Hagen, together with over thirty contributors, provide a broad introduction to the fascinating civilization of the Incas, including their settlements, culture, society, celebrations, and achievements.