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Itō Hirobumi served as Japan's Prime Minister four times. He was the first Prime Minister of Japan and held the position for the first time from 1885 to 1888. He was also Prime Minister from 1892 to 1896, 1898 to 1900, and 1903 to 1906. He was a key figure in the modernization of Japan and helped to establish the country as a major power in the world.