The Inca Empire was highly vulnerable to the Spanish due to the civil war between Huascar and Atahualpa and the devastating impact of smallpox.

“But here, it's slightly different because the Incas are even more vulnerable than the Aztecs. And this takes us back to the scene that had confronted Pizaro and co when they landed on the coast and they found the devastation and the deserted streets and the looted temples”

The Inca Empire is an unusually joyless, totalitarian, and cold state characterized by extreme top-down control.

“Never was there a more pervasive government than that of the Incor. And I think there is something a bit chilling about it. So basically they could if they conquered you or if you did a deal with them, they would take like thousands of people and deliberately move them like Stalin and the Caucuses”