Question

there would be no separation between one countrys economy and anothers if the entire world
shared the same currency.
chose paper currency over coins.
eliminated denominations for currency.
agreed to use only two types of currency.

Explanation:

To determine the correct answer, we analyze the impact of each option on economic separation between countries:

• "Shared the same currency": A single global currency would remove exchange rate differences and currency - related economic barriers between countries, reducing economic separation.
• "Chose paper currency over coins": The choice between paper and coin currency is a matter of currency form, not related to the separation of different countries' economies.
• "Eliminated denominations for currency": Eliminating denominations affects the way currency is used within an economy, not the economic separation between countries.
• "Agreed to use only two types of currency": Having two types of currency still allows for differences between countries' economies as long as there are multiple currencies (or currency systems) in use.

Answer:

A. shared the same currency.