 By 1941, out of 250,000 Romanians in Northern Bukovina, only 192,000 were left.The territory of the Moldavian SSR was composed of Bessarabia (except for Southern Bessarabia, assigned to Ukraine) and a part of the territory of the former Moldavian Autonomous Soviet Socialist Republic (Transnistria), founded in 1924 within the territory of Ukraine.In the document confirming the establishment of the Moldavian Autonomous Soviet Socialist Republic (MASSR) of 12 October 1924 the West frontier of the republic was traced out not along the Dniester River but the Prut River.