Christendom and the outside forces and societies that influenced it.

Question that needs to be answered: After the end of the western Roman Empire in 476, a new society — Christendom — emerged. This society was not large or powerful and, as a result, was heavily influenced by outside forces and societies. Describe how these forces and societies impacted Christendom over the next 1000 years. Make sure to be specific about particular societies and the resulting change in Christendom.