The Vilcabamba region had been part of the Inca Empire since the reign of Pachacuti (1438–1471).[1] During the Spanish conquest of Peru, Túpac Huallpa was a puppet ruler crowned by the conquistador Francisco Pizarro. After his death, Manco Inca Yupanqui joined Francisco Pizarro and Diego de Almagro in Cajamarca. When Pizarro's force arrived in Cusco, he had the caciques acknowledge Manco as their Inca.