In roman times most people lived in small cities ,while during the middle ages most people lived in the countryside?

If the question is asking you all except which, the answer is "people fled the urban centers because they had become too crowded and unsanitary"

operation overlord was the codename for the battle of normandy, the allied operation that launched the successful invasion of german-occupied western europe during world war ii. the operation was launched on 6 june 1944 with the normandy landings

the gutenberg bible was and about 180 copies were sold/made