The Inca Empire (Tawantinsuyu) was the largest pre-Columbian empire in the Americas, centered in the Andes Mountains of South America.
Cusco (modern Peru) was the capital and spiritual center. The empire spanned ~2 million km² and 10–12 million people, connected by the Qhapaq Ñan (Inca road system, 40,000 km).
Rise: early 13th century. Peak: 1438–1533. Fall: Spanish conquest (1532–1572).
The Inca legacy endures in Quechua language, agricultural terraces, and iconic sites like Machu Picchu.