[ApplegateRanch]

It was thought that Wales was a "military zone", abandoned by the Romans a few decades after the first century.

Dr Toby Driver, of the Royal Commission on the Ancient and Historical Monuments of Wales and Dr Jeffrey Davies, formerly of Aberystwyth University, had previously excavated at the nearby Trawscoed Roman fort, which had been abandoned by AD 130.

If abandonment of forts always signified withdrawl, rather than perhaps being a sign of succesful pacification, (Fort Laramie, Fort Robinson, Fort Dodge, Fort Boise, Fort Fetterman, ..., all come to mind) the the United States retreated to the East Coast around 120-140 years ago.

[SunkenCiv]

Hmm... 120 years ago was 1890... 140 years ago was 1870... whassuuuuuup?