He conquered land across three continents, ruled over states from Egypt to modern-day India, and never lost a battle – before ...

of rivers and canals Map reveals how much it would have cost to travel on roads and seas across the empire in 200 CE It calculates the route based on the season, or mode of transport chosen - and ...

By 115 AD, he had captured the Parthian capital of Ctesiphon and had reached the Persian Gulf. The Roman Empire now stretched across Europe and the Middle East, from the borders of Scotland to ...

Editor’s note: Sign up for Unlocking the World, CNN Travel’s ... Greek and Roman authors weren’t interested in the Persian Empire, he says — meaning that even from antiquity, it was ...