What can the decline of Inca empire be traced to?

The decline of the Inca Empire can be traced to a combination of internal strife and external pressures. Civil war weakened the empire as factions vied for power following the death of Emperor Huayna Capac. Additionally, the arrival of Spanish conquistadors, led by Francisco Pizarro, exploited these divisions and brought devastating diseases, such as smallpox, that decimated the indigenous population. Together, these factors contributed to the rapid downfall of the once-mighty empire.