The european union created a single monetary unit to replace the national currencies of twelve member nations. this common currency is known as the:

Euro.

Explanation:

An international organization of European countries formed to protect the economic and social policies to strengthen peace in Europe, named European Union. It ensured the European integration by adopting a common currency (Euro), unified foreign policy, common citizenship rights and to protect Europe from any external threat.

c. taught scientists many new things about the earth, but not other planets.

explanation:

i am a priest who cares deeply about the church. i have been called here to explain my views on indulgences and other proposed reforms. i would like to explain why my views are consistent with the bible and are correct.