The correct answer is A) Masilia to Carthage.
The route that involved trade outside of the Byzantine empire was Massilia to Carthage.
The Byzantine empire depended too much on trade. Part of its prosperity and growth was due to trade. Constantinople, the capital city of the empire, became an important trade hub where merchants from distant places came by and traded their products. You could see merchants from Russia, Arabia, Syria and other parts of the Middle East and Europe that followed different trade routes to and for, Constantinople. The map shows the trade routes of Rome to Athens, Alexandria to Ravenna, and Antioch to Ephesus. And the route that involved trade outside of the Byzantine empire that was Massilia to Carthage.
