In the concluding part, Dr Jago Cooper argues that it wasn't simply a clash of arms that destroyed the Inca, but a clash of world views. He travels from Peru to the far north of Inca territory in Ecuador to reveal how the great strengths of the empire suddenly became factors in its rapid demise. The Spanish conquest of the Inca destroyed one of the most remarkable empires in the world, yet the Inca legacy leaves a great deal for modern civilisations to learn from.