The Inca empire started as a small tribe who lived in the village of Cuzco, high in the Andes Mountains of South America. One day, another tribe tried to conquer them. Thanks to Pachacuti , the king's son, the Incas won! That was the beginning of the Inca empire.
Over the next 100 years, the Inca conquered tribe after tribe until their empire stretched nearly the entire length of western South America. It was one of the largest empires in the world. At it's height, it was over 2,500 miles long and about 500 miles wide, tucked high in the Andes Mountains.
They had a strong central government. There was almost no crime as punishment was harsh. They had a strong army. They had roads and bridges and aqueducts. The government cared for the sick and old. They invented terrace farming to make farming easier on the sharp mountain slopes. They had stores of food they distributed to all people in times of drought. Most people were farmers, but the Inca also had specialized professions like weavers who made fabulous textiles, and musicians who created new instruments like the pan pipe. The Inca invented many things. They believed in many gods.
About 100 years after they had grown into an empire that stretched the length of South America, the Spanish conquered the Incan civilization.
Today, in South America, in the modern county of Peru, you can still find ancestors of the incredible Incas.