Which of these would be BEST classified as a modern economic region?

A) Great Plains

B) Roman Empire

C) Latin America

D) European Union

My answer would be D) European Union because the EU still exists today and it's the most modern

D) European Union

Explanation:

The European Union (EU) is an economic bloc created in 1992 and activity to this day (so it can be considered a modern economic region) to establish economic and political cooperation between European countries. It is one of the examples of the most advanced blocs featuring economic, social and political integration, the common currency, free movement of persons and the functioning of a European Parliament made up of members from the member countries and elected by the citizens.