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But just a few years later in the 1950`s all these trade barriers were considered to be counterproductive and the first attempts were started to abolish them. Based on the Treaty of Rom of 1957 the European Community was founded by six nations. Belgium, France, Italy, Germany, Luxembourg and the Netherlands agreed in 1968 to create a free trade area; that ended up eliminating all their tariffs. Just 2 years later, they formed a Custom Union by adjusting common external tariffs. In 1973 United Kingdom, Ireland and Denmark joined the trade bloc and Greece became a member in 1981.