Topa Inca Yupanqui or Túpac Inca Yupanqui (Quechua: 'Tupaq Inka Yupanki'), translated as "noble Inca accountant," was the eleventh Sapa Inca (1471–93) of the Inca Empire, fifth of the Hanan dynasty, and tenth of the Inca civilization. His father was Pachacuti, and his son was Huayna Capac. Topa Inca belonged to the Qhapaq panaca (one of the clans of Inca nobles). His wife was Mama Ocllo.
His father appointed him to head the Inca army in 1463.
He extended the realm northward along the Andes through modern Ecuador, and developed a special fondness for the city of Quito, which he rebuilt with architects from Cuzco. During this time his father Pachacuti reorganized the kingdom of Cuzco into the Tahuantinsuyu, the "four provinces", Tupac Inca led extensive military conquests to extend the Inca empire across much of Southern America.
He became Inca in his turn upon his father's death in 1471, ruling until his own death in 1493. He conquered Chimor, which occupied the northern coast of what is now Peru, the largest remaining rival to the Incas.
He conquered the province of Antis and subdued the Collas. He imposed rules and taxes, creating two Governor Generals, Suyuyoc Apu, one in Xauxa and the other in Tiahuanacu. Tupac Inca Yupanqui created the fortress Saksaywaman on the high plateau above Cuzco, which included store houses for provisions and clothing.
Tupac Inca died in 1493, leaving two legitimate sons, and 90 illegitimate sons and daughters. He had nominated as his successor Ccapac Huari, son of his concubine Chuqui Ocllo, but they were both killed soon after Tupac Inca's death. This left the path clear for his legitimate son, Titu Cusi Hualpa, to succeed him as the emperor Huayna Capac.
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