trade routes traffic sign on blue sky

trade routes traffic sign blue sky silk road maritime ancient spice trans-saharan mediterranean indian ocean hanseatic league incense caravan amber transatlantic east india company transpacific han dynasty transcontinental tea trans-mexican viking atlantic slave grand trunk pacific northwest phoenician european colonial fur exploration empires sea baltic african south china west arabian british empire trading posts american chinese indus valley overland incan peninsula island mesoamerican ivory monsoon networks