there would be no separation between one countrys economy and anothers if the entire world\no shared the…

there would be no separation between one countrys economy and anothers if the entire world\no shared the same currency.\no chose paper currency over coins.\no eliminated denominations for currency.\no agreed to use only two types of currency.
Answer
Brief Explanations:
A common currency would integrate economies as there would be no exchange - rate differences or currency - related barriers. Paper vs coin, eliminating denominations, or using only two types of currency do not remove economic separation as effectively as a single shared currency.
Answer:
shared the same currency.