Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Historic Sanctuary of Machu Picchu' has mentioned 'Inca Empire' in the following places:
Occurrence Sentence Text Source
Rather it was used for 80 years before being abandoned, seemingly because of the Spanish Conquests in other parts of the Inca Empire.
[21] Most skeletal remains found at the site had lower levels of arthritis and bone fractures than those found in most sites of the Inca Empire.
Guinea pigs were also found at the site in special burial caves, suggesting that they were at least used for funerary rituals,[17][pagexc2xa0needed] as it was common throughout the Inca Empire to use them for sacrifices and meat.
Built in the fifteenth century Machu Picchu was abandoned when the Inca Empire was conquered by the Spaniards in the sixteenth century.