[Jedi Master Pikachu]

More traditional (traditionaler) history has the Incan Empire being only about a century old when Europeans arrived, and the Incan civilization scarcely older than that.

Ideas are that they mooched off the two civilizations which preceded them in the area, much how the Aztecs are considered to have mooched off the Toltecs and other cultures in the region after migrating there from what is now the western United States.

[GeorgefromGeorgia]

The Romans mooched off the Greeks.