Which were reasons the Inca Empire fell?

here are the word ones

B. the road network
C. They forced conquered people to use their language.
A. The Inca cut strips of level land called terraces into hillsides.
C. Lower ranking nobility held government positions.
C. disease, civil war, Spanish Conquest

b c a c c hope this helps yall :)

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The Inca Empire, which was a vast and powerful civilization in South America, fell due to a combination of several factors. Here are some of the key reasons:

1. Spanish Conquest: The most significant factor in the fall of the Inca Empire was the arrival of Spanish conquistadors led by Francisco Pizarro. The Spanish had superior military technology, such as guns and horses, which gave them an advantage over the Inca warriors. Pizarro captured and killed the Inca Emperor Atahualpa, which destabilized the empire and led to its eventual downfall.

2. Civil War: Prior to the arrival of the Spanish, the Inca Empire was weakened by a civil war between two brothers who fought for the throne after the death of their father, the Inca Emperor Huayna Capac. This internal conflict, known as the War of the Two Brothers, divided the empire and made it easier for the Spanish to conquer.

3. Disease: The spread of European diseases, particularly smallpox, also played a significant role in the fall of the Inca Empire. The indigenous population of the Americas had no immunity to these diseases, and they devastated the Inca population, causing widespread death and depopulation. This weakened the empire's ability to resist the Spanish conquest.

4. Lack of Unity: The Inca Empire was a vast and diverse empire, spanning a large territory with various ethnic groups and languages. The Incas ruled through a system of control and tribute collection, which worked well as long as the population remained under control. However, as the empire expanded, it became increasingly difficult to maintain unity and control over distant regions. This weakened the empire from within and made it more susceptible to external threats.

To find more in-depth information about the fall of the Inca Empire, you can consult historical books, scholarly articles, or reliable online sources.