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The reason current structures are more resilient and adaptable is PRECISELY BECAUSE it rules out absolute imperial tendencies (so called 'imperialism' is nothing but a fabrication and myth hyped up by those seeking to create a scapegoat - they wouldn't know a real authoritarian oppression if it was fucking them in the ass, but would rather be sucking its cock instead). Relatively minor 'faults' are nothing compared to the actual sins of those who themselves constantly bitch and moan about 'imperialism' yet oppress their own people and each other with equal degree of criminal behavior.
USD may rise and slump, but rest of the world has a better chance of going up in flames with economic depressions before that happens. If you try to take yourself off of USD, you will find out just exactly how much your prosperity and standards of living were dependent upon it's role in the world. USD or the US Government doesn't need to actively fuck over somebody - they do a fine job of doing that on their own.
Btw rest of the world owes 0.89 dollars for ever 1 dollar US owes to the world. Let that sink in a bit, and also consider the fact that US interest rates paid to others is far less % than others pay to US thanks to relative innate strength and stability of US economy and government.