Hayastani HanrapetuthyunPart of the Ottoman Empire until 1917; part of the Transcaucasian Democratic Federative Republic 1917-1918; Democratic Republic of Armenia 1918-1920; part of the Transcaucasian Socialist Federative Soviet Republic 1920-1922; part of the U.S.S.R. 1922-1991; Republic of Armenia 1991 =>