The greatest mystery of the Inca Empire was its strange economy

In the fifteenth and sixteenth centuries, the Inca Empire was the largest South America had ever known. Centered in Peru, it stretched across the Andes' mountain tops and down to the shoreline, incorporating lands from today's Colombia, Chile, Bolivia, Ecuador, Argentina and Peru - all connected by a vast highway… » 1/03/12 3:23pm 1/03/12 3:23pm