Introduction of the Euro helped solved which of these trade barriers that existed among members of the European Union prior to (before) 1999? A.
Embargoes were placed on all member nations.

B.
Mountains blocked the trade routes of several member countries.

C.
A lack of common currency among member countries.

D.
None of the above was an issue among member countries. Introduction of the Euro helped solved which of these trade barriers that existed among members of the European Union prior to (before) 1999?

A.
Embargoes were placed on all member nations.

B.
Mountains blocked the trade routes of several member countries.

C.
A lack of common currency among member countries.

D.
None of the above was an issue among member countries.