Rome conquered all its neighbours This is not entirely true; Rome sent in the legions only when it had to. It “conquered” most of Britain via soft power, coopt

Rome conquered all its neighbours This is not entirely true; Rome sent in the legions only when it had to. It “conquered” most of Britain via soft power, coopting local elites, introducing hypocausts, aqueducts and so on. Where it had to use hard power, it failed hence Hadrian’s Wall.