Comparisons have often been made between the fall of Rome and what is believed to be the coming fall of the American empire which is seemingly accelerating. Both empires faced mass immigration which radically transformed the ethnic profile. This is occurring now with the US rapidly becoming not merely non-European, but non-white in terms of the majority demographics. For Rome, this breakdown in national cohesion was one factor lading to the relative ease of the Germanic “barbarians” successfully raiding and destroying Rome, as detailed by Peter Heather in The Fall of the Roman Empire. “Like Rome by the end of the 4th century and into the 5th century, the USA is in decline. We can expect a collapse of our dominant role in the near future. Our society is divided beyond repair. Even without a civil war, the division itself bespeaks extreme weakness. The God of the Holy Bible is no longer the clear God of our country. Godless and immoral elements supported now by one of our two great political parties have set up a barrier to compromise, and the Republicans are too weak and accommodating to restore national unity.”
An essay well worth reading that elaborates in great detail on these themes is Michael Anton, “The Pessimistic Case for the Future.” The focus of these writers is upon the US, which is at the leading edge of decline, but he same forces are acting across the West, in Australia as well.