You could imagine the private sector running on a different economy than the country’s one. It happens when the government has gone bankrupt ( because of war or

You could imagine the private sector running on a different economy than the country’s one. It happens when the government has gone bankrupt ( because of war or unsustainable debt, for example). But even in that case, the money still has some value, and can’t completely disappear, even if state employees run to the bank to exchange their salary against us dollar. Their value are correlated to the trust and ability to function of a state.