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UN establishes Economic Commission for Europe to promote economic cooperation. Initial members are: Belarus, Belgium, Czechoslovakia, Belarus, Denmark, France, Greece, Holland, Iceland, Luxembourg, Norway, Poland, Russia, Sweden, Turkey, Ukraine, the United Kingdom, and the United States.
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Holland, Belgium, and Luxembourg establish a trade union.
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The Treaty of Brussels establishes an organization between the UK, France, Holland, Luxembourg, and Belgium for mutual military defense.
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The Organization for European Economic Cooperation was formed to help carry out the Marshall Plan. Its initial members are "Austria, Belgium, Denmark, France, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Sweden, Switzerland, Turkey, United Kingdom, and Western Germany ... The Anglo-American zone of the Free Territory of Trieste was also a participant in the OEEC until it returned to Italian sovereignty."
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UN Economic Commission adds: Italy, Ireland, Hungary, Finland, Austria, Albania, Bulgaria, Romania, Portugal, and Spain to its membership.