It would be the colonists
It'll take 17 hours more or less depends on where your location is
Massilia to Carthage is the route that involves trade outside of the Byzantine Empire.The Byzantine Empire was also known as the Eastern Roman Empire. Its capital city was Constantinople. The routes Rome to Athens, Alexandra to Ravenna and Antioch to Ephesus all fall within the Byzantine Empire. The Byzantine Empire was the most powerful empire during its existence and survive the breaking up and fall of the Western Roman Empire.
"2. Are you writing naturally and academically?" would be the best option. The rest of the answers seem more like revisions to grammatical errors rather than the voice of the essay.