Slow breakdown scenario

[Tartar Horde]

The collapse of the Western Roman Empire (not the Eastern known as Byzantium which fell in 1453) from a model point of view is very pertinent to the days we find ourselves in now. BM pointed out a difference in social attitudes, but the overall model is familiar to all civilisation collapse. The collapse of Rome wasn't just one incident but a series of shocks that culminated in an irreversible decline in the money and overseas grain shipments. The Empire became too big to control and outward pressure through mass migration and war weakened the once powerful Legions. The fringes were the first to go, as they tried to bolster the centre by withdrawing legions back to Rome, all too little too late. On the 24th August 410 AD the Visigoths led by Alaric entered and sacked the city.
But what has this brief history lesson to do with us? surely we know more than the Romans? the point I'm trying to make is that all civilisations fall in the same way, because of the way we as a species run them, they are all built on the same model, one of perpetual growth that eventually hits the limits to that growth and so ushers in collapse. We are at the same point Rome found itself at the beginning of the barbarian wars, one of increased pressure by people attempting to get into Rome driven by economic and food concerns. The collapse and debasement of the money system. And importantly a reliance on overseas food imports to feed the ever growing population. These are all the symptoms we find now in our current civilisation, yet they mirror exactly the ones that did for the Romans.
Ps
A few decades later Rome was a wrecked city with less than 30k people and sheep grazed where Caesar once stood. Rome became a hideout for cut throats and gangs who controlled the dead city. I'll leave you to ponder with a quote by one of those long gone Romans, Marcus portius Cato. Fortuna favet menti paratae. "Fortune favours the prepared mind". Could he have been the first Roman prepper