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How well would a nation with paper currency and the prominent developments of Nicholas Barebone function (such as the mortgage) if it's the only one which uses them to any significant extent? Trade might be a shambles with gold still needed for foreign trade. It's been said that the mortgage allowed value that would usually be locked up in land to circulate the economy.
This nation is not going to be the only one forever, it's just a prolonged period before anyone follows them.