That's only if the two entities can both interact with the global banking infrastructure (i.e. they hold money in reserve currencies, their accounts aren't frozen, etc.)
If someone in Argentina wanted to buy something from anywhere else in the world in 2000, for example, they'd basically have to trade natural resources or gold for access to foreign currency, and then spend that.
If someone in Argentina wanted to buy something from anywhere else in the world in 2000, for example, they'd basically have to trade natural resources or gold for access to foreign currency, and then spend that.