I’ll give you the USSR, because that was central planning and warfare to the extreme. But your other examples don’t work (for clarification, you mentioned Egypt, Greece, the Roman Empire, and Britain)
Originally Posted by 302Riz
Egypt, Greece and Rome
Egypt and Greece fell to Rome because the government of the latter spent an enormous sum of money creating an organised war machine through the Marian Reforms and direct senatorial control, and a state-influenced economy based around the Annona system). This system encouraged the production and distribution of consumable goods around the Mediterranean, and was so economically influential that when the Roman Empire in the West faded in the 5th century, Europe as a whole went into an (economic) Dark Age for another 500 years or so. Economies had to be based not on trade -which became difficult without standardised systems of exchange and protection from piracy by government- but land. That’s what feudalism was all about. And nor did the Roman Empire bleed itself dry from big government/wars –because if that was the problem, why didn’t it do so from the moment the legions left Italy or set up centralised control? While the reasons for why the Roman Empire in the West tanked in the 470s have been debated for centuries, it’s most likely that the problem was internecine warfare based on competing ethnic groups and the lack, not the presence of, strong central systems of control to keep them in check.
The end of the British Empire was not financially crippled by the size and scale of it’s territories, but because of the first and second world wars. If gaining that territory (through wars, no less) had been unprofitable, it simply wouldn’t have been attempted. That was because conquest wasn’t a centralised process; it was farmed out to corporations like the East India Company. By the 1950s most colonies –from Africa right up to Northern Ireland- were undergoing national identity movements that shows Britain hadn’t really done much to assimilate them at all. Rather than spending money, the British Empire did everything on a shoestring.
TL;DR: You don’t know what you’re talking about.
Show us not the aim without the way, for ends and means on earth are so entangled
That changing one, you change the other too; each different path brings other ends in view