The INCA Empire was a pre-Columbian empire that was located in western South America. It was the largest empire in the Americas before the arrival of Europeans and was one of the most advanced civilizations in the world at the time. The INCA Empire was centered around the modern-day country of Peru and extended into parts of modern-day Ecuador, Bolivia, Chile, and Argentina. The INCA Empire was ruled by the Sapa INCA, who was considered to be a divine ruler. The INCA Empire was known for its impressive architecture, including the famous Machu Picchu, and its complex system of roads and bridges. The INCA Empire was eventually conquered by the Spanish in the 16th century.