Development of the Inca civilization

The Inca civilization developed in the Andes Mountains of South America, primarily in present-day Peru, during the 15th and 16th centuries. They built a vast empire through military conquest and strategic alliances, eventually controlling a diverse population through a complex system of governance, including an elaborate network of roads and communication. The Inca are best known for their advanced agricultural techniques, monumental architecture such as Machu Picchu, and their highly organized society based on collective work and loyalty to the ruler, known as the Sapa Inca.