What defines a formal region?

A formal religion is usually one that organized with in a church or an organization and that has specific rituals or rites.

in 476 c.e. romulus, the last of the roman emperors in the west, was overthrown by the germanic leader odoacer, who became the first barbarian to rule in rome. the order that the roman empire had brought to western europe for 1000 years was no more.