What caused the demise of the ancient roman republic?

Question: What caused the demise of the ancient roman republic!?
Best Answer - Chosen by Asker:

Far to big of a topic for Yahoo answers!. Several volumes on the multitude of causes!. Start with Gibbon's classic The Rise and Fall of the Roman Empire!.Www@QuestionHome@Com

Several:

Christianity
Technological Advancement of the northern tribes ie: Vandals, goths, etc!.
Unwillingness to innovate and change
Growth of weakness in governmental leadershipWww@QuestionHome@Com