Huayna Capac in the context of "Topa Inca Yupanqui"

The Neo-Inca State, also known as the Neo-Inca state of Vilcabamba, was the Inca state established in 1537 at Vilcabamba by Manco Inca Yupanqui (the son of Inca emperor Huayna Capac). It is considered a rump state of the Inca Empire (1438–1533), which collapsed after the Spanish conquest in the mid-1530s. The Neo-Inca State lasted until 1572, when the last Inca stronghold was conquered, and the last ruler, Túpac Amaru (Manco's son), was captured and executed, thus ending the political authority of the Inca state.

The Inca Civil War, also known as the Inca Dynastic War, the Inca War of Succession, or, sometimes, the War of the Two Brothers, was fought between half-brothers Huáscar and Atahualpa, sons of Huayna Capac, over succession to the throne of the Inca Empire. The war followed Huayna Capac's death.

It began in 1529, and lasted until 1532. Huáscar initiated the war; appointed as emperor and claiming the throne, he wanted to defeat Atahualpa's competition. Atahualpa was tactically superior to his brother in warcraft and to the mighty armies of Cusco, which their father had stationed in the north part of the empire during the military campaign. Accounts from sources all vary in the exact details.