One way European Union encourages trade among countries through the use of

Question

Tariffs
Common currency
Export limits
Military alliances

Answer 1

The European Union encourages trade among countries primarily through the use of a common currency. The introduction of the euro as a single currency for many EU member states reduces transaction costs, eliminates exchange rate fluctuations, and simplifies trade among those countries, thereby promoting economic integration and facilitating trade.

While tariffs and export limits can restrict trade, military alliances are not primarily a mechanism for promoting trade within the EU.