The most powerful figure in the empire was the Sapa Inca ('the unique Inca'). Only descendants of the original Inca tribe ascended to the level of Inca. Most young members of the Inca's family attended Yachay Wasis (houses of knowledge) to obtain their education.
The Inca Empire was a federalist system which consisted of a central government with the Inca at its head and four provinces: Chinchay Suyu (NW), Anti Suyu (NE), Kunti Suyu (SW), and Qulla Suyu (SE). The four corners of these provinces met at the center, Cusco. Each province had a governor who oversaw local officials, who in turn supervised agriculturally productive river valleys, cities and mines. There were separate chains of command for both the military and religious institutions, which created a system of partial checks and balances on power[citation needed]. The local officials were responsible for settling disputes and keeping track of each family's contribution to the mita (mandatory public service).