(Listening to You're Dead to Me about the Incas.) They called themselves the Tawantinsuyu. It was centered in Cusco Peru, but went from the tip of Columbia to Chile and Argentina. Cusco means stones, stones are important in the culture. It's the largest empire in pre-Columbian America. "one of the greatest imperial states in human history" without the use of the wheel, draft animals, knowledge of iron or steel, or even a system of writing." (Gordon McEwan). I've been to Ecuador for 2 months, and I remember thinking it's Incas, and then there's people before them, and the Spanish after them. The Incas are around the time of War of Roses and Tudors, and was bigger than the British empire. England is 2 million people, and Incan empire is 14 million. There's no writing, just Spanish settlers who encounter them. As Sheldon Cooper points out the first computer might have been a Quipu . I'm always amazed that in a way it's fairly recently tha...