Distant population shifts force border tribes to demand entry into Roman territory

Evidence

population movements in what is now Poland and the Ukraine started to impact on tribes bordering Rome’s Empire, who now sought sanctuary within the Empire and threatened war unless they were taken in — Stephen Kershaw, A Brief History of the Roman Empire, 1079

Categorization

• corroborated: 2 independent passages support this claim — Stephen Kershaw, A Brief History of the Roman Empire, 1079