The Incas were a powerful civilization that thrived in the Andean region of South America from the early 15th century until the Spanish conquest in the 16th century. They established a vast empire, known as the Inca Empire, which stretched from modern-day Colombia to Chile. The Incas are known for their advanced agricultural techniques, impressive stone architecture, and extensive road systems. Their capital was Cusco, a city that served as the political and cultural center of the empire. The Incas practiced a unique form of governance, with a strong emphasis on community and collective labor. They also worshipped a pantheon of gods, with the sun god, Inti, being the most important in their religion.