Huayna Capac vs Sinjong of Goryeo

Huayna Capac led Inca armies northward, conquering the Kingdom of Quito (in modern Ecuador). This campaign extended the Inca Empire to its northernmost extent, incorporating new territories and peoples into the imperial administration.

Huayna Capac oversaw the expansion and fortification of Sacsayhuaman, a massive stone fortress overlooking Cusco. The complex, built with enormous fitted stones, served as both a military stronghold and a ceremonial center, demonstrating Inca engineering capabilities.

Huayna Capac divided the Inca Empire between his sons Hu

Huayna Capac died from smallpox, a disease introduced by Europeans that spread through the Inca Empire ahead of Spanish conquistadors. His death triggered the Inca civil war and left the empire vulnerable to Francisco Pizarro's invasion.

After deposing Myeongjong, military dictator Choe Chung-heon installed Sinjong as the new puppet king. Sinjong was a younger brother of the previous king and had no political experience, making him easily controllable.

Sinjong's reign was entirely ceremonial, with all state affairs managed by Choe Chung-heon's private military regime. The king had no authority over appointments, taxes, or military decisions.

Choe Chung-heon deposed Sinjong after only seven years, citing the king's inability to control factional strife. Sinjong was exiled and replaced by his son Huijong, further entrenching Choe control over the throne.