This is widely known as the "trilemma"; you can have at most 2 of: - Fixed exchange rate - Free movement of capital - Ability to conduct your own monetary po

This is widely known as the "trilemma"; you can have at most 2 of: - Fixed exchange rate - Free movement of capital - Ability to conduct your own monetary policy https://en.wikipedia.org/wiki/Impossible_trinity https://en.wikipedia.org/wiki/Impossible_trinity