Inca

The Incas were a South American people who built a civilization in the region near modern-day Peru. Their civilization lasted from the twelfth to the sixteenth century, and grew into a powerful empire in the last century of its existence. At its height, the Inca empire ruled an area that stretched for about 2,500 miles and had a population of more than ten million people. The Incas built great cities and a system of roads to connect the empire. They also developed a method of farming suited to the harsh mountain climate of their homeland. The empire was still in the process of expanding when Spanish explorers arrived in the early 1500s. By the end of the century, the Spanish...