The Incas were a distinct people with a distinct language living in a highland center, Cuzco. They were an ancient people, but had been subject to the regional powers during the entire history of South American urban cultures. They began to expand their influence in the twelfth century and in the early sixteenth century, they exercised control over more territory than any other people had done in South American history. The empire consisted of over one million individuals, spanning a territory stretching from Ecuador to northern Chile.