Why couldn t the Romans conquer Scotland?

Why couldn t the Romans conquer Scotland? Gnaeus Julius Agricola would make a name for himself, etched forever in the history books, as the Roman who conquered Caledonia. Though he didn’t fully seize what we know today as Scotland, his invasion would prove to be a significant event in both Roman and Scottish history for many years after. ♦Consider supporting the Channel: https://www.patreon.com/Knowledgia ♦Please consider to SUBSCRIBE: https://goo.gl/YJNqek ♦Music by Epidemic Sound ♦Script & Research : Skylar Gordon #History #Documentary #RomanEmpire