How did we determine that the borders of the Roman Empire at the end of its existence were exactly as depicted by historians and cartographers?

Answer from: Vladislav Noskov:
Sysadmin, a bit of a lifeservice

Because that's what the sciences of archaeology and source science tell us. Which are historical sciences and are designed to solve questions like this one.

Ask the questions that interest you, even if they seem silly, childish, strange, funny, embarrassing, uncomfortable, or abstruse.

ASKRUS.Guru 2019-2021©