Okay, I've noticed a couple of ideas around and they seem to have an underlying idea - Trading.

Trade is what has made and broken empires. It is the thing which has made people travel rediculously long distances... Marco Polo anyone? The Silk Road? The Dutch East India Company? South America???

So I want to kick out the idea of a map challenge that relates to TRADING.

Ancient Ideas
Map of Empires (e.g. Early Greece and the Mediterranean trading)
Sailor's Map (e.g. How do you get from Rome to Constantinople by boat without running aground?)

Medieval Ideas
Commodities trading across the seas
The Silk Road
"Maps of the Orient"/Explorer's Maps

Modern Maps
Supply Chain Map
International Trading Map

Futuristic Maps
Star System Resourcing
Interstellar commodity trading