欧盟的成立是为了促进经济和政治合作。

The European ___Union was established to foster economic and political cooperation.

关于欧洲政治和货币联盟的辩论仍然是一个重要议题。

The debate on European political and monetary ___union remains a significant issue.

这两个组织的联合带来了更高的效率和影响力。

The ___union of these two organizations led to greater efficiency and impact.