<P> From Britannia comes an indication of the prosperity which freedom from taxes could bring . </P> <P> No sooner were the ravages of the enemy checked, than the island was deluged with a most extraordinary plenty of all things, greater than was before known, and with it grew up every kind of luxury and licentiousness . </P> <P> Nevertheless, effective imperial protection from barbarian ravages was eagerly sought . About this time authorities in Britannia asked Aetius for help: </P> <P> "To Aetius, now consul for the third time: the groans of the Britons ." And again a little further, thus:--"The barbarians drive us to the sea; the sea throws us back on the barbarians: thus two modes of death await us, we are either slain or drowned ." The Romans, however, could not assist them...</P>

What are some contributing factors to the fall of the western roman empire