answer:Lousy restaurants, cold climate, no one spoke their language, and they were vulnerable to the adhesive on scotch tape. This wouldn’t be homework, would it? Seriously, there are any number of reference source on the web (and in libraries) that outline Ancient Britain and the Roman Conquest and withdrawal. Start by googling “Scotland History” and you’ll have a very rich set of pages to pursue. You might also look into Hadrian’s Wall, Antonine Wall, and the Picts. There’s lots of stuff to be found.