Like the Romans, the Incas had an amazing ability to build roads and fortresses. They had a well defined state structure, and division of labour. Legend has it that Manco Capac; the first Inca ruler was the son of the creator God Viracocha. He came to Earth on a sun island in Lake Titicaca. The ruler known as the Sapa Inca was carried in a sedan chair. The taxes were paid by the peasants.
The Incas counted by putting knots on strings. Knotted strings were known as quipu. The Incas buried gold in their tombs.