alt Hacker NewsWith two exceptions (Britain and Dacia), the Roman empire mostly ran out of interesting neighbours to conquer by 1 AD.
Britain was considered Claudius' vanity project and probably was, on the net, an economic loss. Dacia was abandoned quite early precisely because it wasn't interesting enough to defend.
The legions remained pretty big long (centuries) after the expansion phase ceased.
>With two exceptions (Britain and Dacia), the Roman empire mostly ran out of interesting neighbours to conquer by 1 AD.
The Romans spent centuries after that trying to conquer the Persians (Parthians/Sassanids).
> Britain was considered Claudius' vanity project and probably was, on the net, an economic loss.
Apparently there were 3 legions in Britain, which was (per conquered person) more than any other Roman territory. Certainly a lot for a damp island with some tin. ;0)