The Decline of Rome

What were the most important reasons for the decline of the Roman Empire? Why?
The seemingly unstoppable Roman Empire was bound to fall after the many aspects that made Rome such a dominant empire started to fade away. Rome was the center of the world and the thought that such a worldwide power could decline was unheard of. It was not built in a day; therefore it couldn't be destroyed in one day. The marvelous city declined for many reasons yet there are only a few major reasons that led to its diminish. Political, economic, religious, and outside forces were the major factors that led to…