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Owen Seymour Arthur was a Barbadian politician who served as the fifth prime minister of Barbados from 6 September 1994 to 15 January 2008. He is the longest-serving Barbadian prime minister to date. He also served as Leader of the Opposition from 1 August 1993 to 6 September 1994 and from 23 October 2010 to 21 February 2013. Arthur was a firm advocate for regional integration and cooperation among the countries of the Caribbean. He was described by CARICOM as the chief architect of the Caribbean Single Market and Economy. He argued in favour of making the Caribbean Court of Justice the final court of appeal for countries of the Caribbean, and he advocated for the University of the West Indies regional airline LIAT, and projection of resistance against infringement on sovereignty by large nations.