By the fourth century, all were in decline, and after AD 411 the Roman Empire gave up on England. Troops were withdrawn; those left were not paid, and as the Roman state crumbled, administrators were expelled by the local population. By AD 450 all these trappings of economic prosperity were gone. Money vanished from circulation. Urban areas were abandoned, and buildings stripped of stone. The roads were overgrown with weeds. The only type of pottery fabricated was crude and handmade, not manufactured. People forgot how to use mortar, and literacy declined substantially.
