The fall of the Roman Empire was a culmination of many things. Here are few documented reasons:
1.) Loss of civic virtue.
2.) Outsourcing duties, Roman men became "effeminate", (unwilling to do manly things, like fight and work.)
3.) Romans became comparative pacifists.
4.) Romans became tolerant of other cultures and languages and invited strangers to dwell among them.
5.) There was complete social collapse, encompassing the gradual disintegration of the political, economic, and military institutions. This left the door open to the rise of the Islamic Empire.
That's correct, the Islamic Empire. Within 150 years from the fall of Rome, the Muslims were conquering lands across the entire European continent. From the years 632AD through 872AD, Islam conquered no less than 30 countries, including Syria (637ad), Armenia (639ad), Egypt (639ad), North Africa (652ad), Cyprus (654ad), North Africa 2nd siege (665ad), 1st siege of Constantinople (674-678ad), 2nd siege of Constantinople (717-718ad), at the same time the Islamic Empire conquered Hispania (Spain) (711-718ad). The Muslims didn't stop there, no sir, in 820AD they conquered Crete, and in 827AD, they conquered Southern Italy. Pretty impressive, isn't it? Fortunately for the rest of the world, the Last surviving Muslim Empire, the Ottoman Empire, collapsed in 1918 in the aftermath of World War I. On March 3, 1924, the institution of the Caliphate was constitutionally abolished.
Caliphate, that word rings a bell, I could swear that I heard a Muslim Cleric just recently urging the establishment of a Caliphate in the UK, and right here in the USA.
The parallels I am drawing are these; the reasons leading to the fall of the Roman Empire, are happening right here in America. The loss of virtue, the outsourcing of jobs and duties, the effemination of the American male. The pacifistic attitude toward our nations problems. Even Christian's are apathetic because they are counting on the much better life after death. America's social structure isn't quite collapsing, but it is being transformed. The disintegration of our political, economic, and military institutions is unprecedented. Just as the Roman's were warned of their eminent demise by philosophers of their past, like Aristotle who said, " Tolerance is the last virtue of a dying society." For the Romans, that sentence pretty much outlined their future, and foretold of their end. The words of Aristotle, are words America would do well to pay heed too. Our political correctness, our need to be tolerant of societies, and religions, and governments is putting our own society at serious risk, to say the least. The narcissism that abounds in America, keeps us from being vigilant. As our country is being sold right out from under our noses, we have people asking that same question, what's in it for me?
The other parallel, is the recent rise of the Islamic Empire. I can not be the only one who sees it. The United Kingdom, has been once again conquered by Muslims, as well as Spain and the Netherlands, where next? We know where, don't we? That's correct, America is the target for Islam. The Muslims know that if they can conquer the country with the largest Christian population in the world, that the rest of the nations will fall like dominoes.