This is pretty misleading. While under Gaddafi Libya did have free education and free healthcare, and big revenues from oil, the investments were not equally distributed around the country. Your picture shows the beach area in Tripoli, and then compares it to what I am guessing is probably Benghazi. Well, Benghazi and generally the eastern part of the country was neglected under Gaddafi. Big parts of the population was unemployed, the infrastructure was crumbling, not to mention the repression of Gaddafi's secret police there was big. Plus Libya had always been a tribal society, and the tribes in the east had a big rivalry against the those in other parts of the country, namely Tripoli.
The population there was always wary of Gaddafi. And then you had the Arab Spring happening with populations in neighbors like Egypt and Tunisia revolting. Gaddafi's establishment started to look pretty weak, as he was also getting old and many of the top guys were trying to get into position to get more power and take over. You don't need some weird conspiracy theory of the US overthrowing Gaddafi because he wanted to create a common currency for Africa.
Throughout his reign, Gaddafi had lots of of strange pan-African projects. They had one thing in common. They all failed. And this was in the 1970's and 1980's when Gaddafi still had deep pockets and allies in other countries. By the 2000's, he did not have the same amounts of money and his only friend was the economic genius Robert Mugabe (the one who made everyone in his country a zillionaire overnight). A pan-African dinar had the same chance of happening as me defeating Thanos and becoming the ruler of the universe.
Moving on. Once again, you are throwing around this strange theory that the US somehow started the war in Ukraine. And using Mearsheimer's discredited theory to back it up. It's like the people in Ukraine were happy and wanted uncle Vladimir Vladimirovich to come in and rescue them, only for that pesky Joe Biden to somehow start a war against their will. And if it weren't for that evil American military-industrial complex, they would all live happily ever after under the benevolent watchful eye of the one and only Vladimir Vladimirovich the Great.
Or rather, why not actually admit that the Ukrainians have agency?
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Huge Edit: I published an article which is sort of a response to this one, outlining my arguments: https://modernrenaissanceman.medium.com/why-the-us-dollar-will-stay-dominant-and-there-will-be-no-new-global-currency-5adfd2639b33