That is supposed to have become one market which does not entail any tariff distinctions between the nations. But it should be noted that some of the analysts feel that it will never become a single entity market, but will remain separated into different varying national markets. The reason is being ascribed to "cultural, informational, logistic barriers and perhaps remaining discriminatory barriers all of which imply an incurable tendency to award contracts to local suppliers." (Is Culture a Major Barrier to a Single European Market? The Case of Public Purchasing) The general aim of free trade has however changed and it is now not limited any more to the removal of barriers in being able to sell the products made in one country to other countries of the world. This is considered to be even more important for that of the developing countries wherein their progress in development made however will not be accepted till they are able to sell their goods in the global markets. (The Role of the Diplomat in Times of Globalization)

Conclusion:

At the same time, some methods of controls exist and those are the tariffs and quotas.
References

Madsen, Poul Thois. "Is Culture a Major Barrier to a Single European Market? The Case of Public Purchasing" Retrieved at http://www.ihis.aau.dk/~pmadsen/purchase.htm. Accessed 18 September, 2005

Market Access and Protocol Commitments" Retrieved at http://www.uschina.org/public/wto/ch-memo.html. Accessed 18 September, 2005

Non-tariff Barriers to Imports" Retrieved at http://www.wright.edu/~tran.dung/Chapter8_Pugel.htm. Accessed 18 September, 2005

Tariff" Wikipedia, the free encyclopedia. Retrieved at http://en.wikipedia.org/wiki/TariffAccessed 18 September, 2005

Tortora, Manuela. "The Role of the Diplomat in Times of Globalization" Retrieved at http://lanic.utexas.edu/~sela/AA2K/EN/cap/N59/rcapin59-10.htm. Accessed 18 September, 2005