Never apologize for giving us a history lesson. I enjoyed reading your comments.
Indeed. Lots of history buffs on FR (me included).
Notice in the map the Romans stopped when they got to Scotland. The Roman Emperor Hadrian got tired of having his troops in England constantly having to battle the Scots when they made incursions and had a wall built which was called Hadrian’s Wall and the remnants of which are still the dividing line between England and Scotland today. Walls work!