This article focuses too much on economics. Surely these economic effects have happened and greatly contributed to Rome's demise. But were they a root cause or

This article focuses too much on economics. Surely these economic effects have happened and greatly contributed to Rome's demise. But were they a root cause or just a consequence of something else? I think that politics played some role in Rome's demise and that should've at least been mentioned to give a complete picture. Some political systems are quite effective, some are not as much. Monarchys are typically less effective since the power transition is not merid-based. Roman empire wasn't quite a monarchy in the medieval sense, but judging by the amount of crises per century, it was pretty close. Wasn't that a factor to be taken into account? Wasn't that the bad emperors who screwed up Roman economy to the extent that even Marcus Aurelius couldn't fix it? Early Roman republic was on the other hand an outlier in terms of its efficiency. Obviously that was military efficiency, but wasn't it tightly connected with political efficiency? It seems to me that early Roman republic managed to build a system that promoted people based on their merit and that somehow made the entire system an order of magnitude more efficient then their neighbours. It seems to me that just the fact that we are looking at ancient Roman history is an example of availability bias. Hundreds or thousands of other city-states of that era weren't as militarily or politically effective and therefore lost to Rome and ceased to exist. This is another indicator of high efficiency of early Roman politics, and it kind of implies that as time went by the efficiency slowly or rapidly decreased. Of course it's hard to argue about how effective is one political system compared to another. It's hard to even define precisely what is efficiency in this case. But I think we shouldn't only focus on economics just because it's easier to talk about. I am waiting for someone smarter than me to write a book about political reasons of why do societies collapse. Or is there such a book already out there?