well since the Spanish conquered them in the 15 century i would guess about the 15th century late 14th at the most
1325-1521
Around 1572, which is around the downfall of their civilization. Also try Wikipedia.
The Inca civilization existed after the Aztec civilization. The Aztecs rose to prominence in the early 14th century, reaching their height in the early 16th century, while the Inca Empire began to expand significantly in the early 15th century and reached its peak around the same time as the Aztecs, shortly before the Spanish conquest in the 1530s. Thus, both civilizations coexisted for a brief period, with the Aztecs being established earlier.
The Inca's lived from 1200 AD to late 1500 AD
The Spaniards led to the decline of the Inca civilization. The Spaniards took Atahualpa (ruler at the time,) hostage and killed his brother Huascar. Then they installed a new leader Atahualpa's brother, Manco Inca. He eventually passed on the throne to his son Tupac Amaru. When the Spaniards captured and executed him, the Inca's resistance to the Spaniards ended.
1325-1521
Around 1572, which is around the downfall of their civilization. Also try Wikipedia.
1200 CE
The INCA civilization was already extinct by the time of WW2.
1450-?
In Mexico, the Aztec; in Peru, the Inca
The Inca's lived from 1200 AD to late 1500 AD
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Spain conquered the Inca and Aztec Empires. By the time of European arrival, the Mayan civilization had imploded four centuries prior.
Late Horizon
1550 to 300 BCE.
then and now