I'm sure much can be written about the Incas, however my contribution will always go back to the Afrikan SOURCE/ROOTS of things
THE INCA EMPIRE: CHILDREN OF THE SUN
Pre-Columbus civilization in the Americas had its foundation built by Africans and developed by the ingenuity of Native Americans.
The Inca, who called themselves the Tawantinsuyu - ruled an empire extending from Ecuador to central Chile, their capital was called Cuzco/Cosco. The Inca were a Peruvian highland warrior people. The king of the Inca Empire was called the Sapa Inca (emperor), or simply Inca.
The race of the Inca, as well as the Holy Roman Emperors, who later came to rule them during the reign of Charles V, has long been in contention. Two old paintings with provenance in Peru, answers both questions definitively
FROM THE ABOVE EVIDENCE, WE CAN SAFELY CONCLUDE THAT THESE PEOPLE ARE THE TRUE DESCENDANTS OF THE INCA.