Western Ukraine or West Ukraine (Ukrainian: Західна Україна) is a geographical and historical relative term used in reference to the western territories of Ukraine. Important cities are Buchach, Chernivtsi, Drohobych, Halych (hence - Halychyna), Ivano-Frankivsk, Khotyn, Lutsk, Lviv, Mukacheve, Rivne, Ternopil, Uzhhorod and others. Western Ukraine is not an administrative category within Ukraine. It is defined mainly in the context of European history pertaining to the 20th century wars and the ensuing period of annexations. The current oblast administration borders are almost perfectly aligned with the administrative divisions of the Second Polish Republic from before the 1939 invasion of Poland by the Soviet Union. At the onset of World War II the region was incorporated into the Ukrainian Soviet Socialist Republic (УРСР), following mock elections which manufactured public consent for the transfer of land from occupied Poland to the Soviet Union as of October 22, 1939. Its historical background makes Western Ukraine uniquely different from the rest of the country, and contributes to its distinctive character of today.
Unlike the rest of Ukraine, most of Western Ukraine was never part of the Russian empire. It is the only territory in Ukraine whose administrative units are named after its own historic regions often going back centuries, instead of their administrative centers which are used conventionally throughout the rest of the country. The modern south-western part of Western Ukraine became a province of Austria-Hungary after the partitions of Poland. Its northern flank with the cities of Lutsk and Rivne was acquired in 1795 by Imperial Russia following the third and final partition of Poland. Throughout its existence Russian Poland was marred with violence and intimidation, beginning with the 1794 massacres, imperial land-theft and the deportations of the November and January Uprisings. By contrast, the Austrian Partition with its Sejm of the Land in the cities of Lviv and Stanislavov (Ivano-Frankivsk) was freer politically perhaps because it had a lot less to offer economically. Imperial Austria did not persecute Ukrainian organizations. In later years, Austria-Hungary de facto encouraged the existence of Ukrainian political organizations in order to counterbalance the influence of Polish culture in Galicia. The southern half of West Ukraine remained under Austrian administration until the collapse of the House of Habsburg at the end of World War One in 1918.