Main Page | See live article | Alphabetical index A customs union is a free trade area with a common external tariff. That is, the same customs duties, quotas, preferences and so forth apply to all goods entering the area, regardless of which country within the area they are entering. Examples of customs unions include the EFTA, the European Union, the Zollverein, and the Turkey-EC customs union. see also international trade, Trade bloc This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.