The Incas were the native people of Machu Picchu, an ancient city located in the Peruvian Andes. They were a powerful and advanced civilization that flourished in the 15th and 16th centuries. The Incas were known for their impressive architecture, including the construction of Machu Picchu, which was built in the mid-1400s. They also developed a complex system of agriculture, engineering, and trade. The Incas were eventually conquered by the Spanish in the 16th century, but their legacy lives on in the ruins of Machu Picchu.