Germany, stretching from the Recknitz river to the Oder–Neisse line. This region is part of the federal state of Mecklenburg-Western Pomerania. The southernmost part of historical Western Pomerania (the Gartz area) is now in Brandenburg, while its historical eastern parts (the Oder estuary) are now in Poland. Western Pomerania comprises the historical regions inhabited by Western Slavic tribes Rugians and Volinians, otherwise the Principality of Rügen and the County of Gützkow. The West Pomeranian Voivodeship (Zachodniopomorskie) in Poland, stretching from the Oder–Neisse line to the Wieprza river, encompassing most of historical Pomerania in the narrow sense (as well as small parts of historic Greater Poland and Lubusz Land). The Pomeranian Voivodeship, with similar borders to Pomerelia, stretching from the Wieprza river to the Vistula delta in the vicinity of Gdańsk. The northern half of the Kuyavian-Pomeranian Voivodeship, comprising most of Tuchola Forest and Chełmno Land. The bulk of Farther Pomerania is included within the modern West Pomeranian Voivodeship, but its easternmost parts (the Słupsk area) now constitute the northwest of Pomeranian Voivodeship. Farther Pomerania in turn comprises several other historical subregions, most notably the Principality of Cammin, the County of Naugard, and the Lands of Schlawe and Stolp, The Lauenburg and Bütow Land is considered a part of Pomerelia (Kashubia) by the Polish historiography, and of Farther Pomerania by the German historiography. Parts of Pomerania and surrounding regions have constituted a euroregion since 1995. The Pomerania euroregion comprises Hither Pomerania and Uckermark in Germany, West Pomerania in Poland, and Scania in Sweden. Nomenclature Etymology In Lechitic languages the prefix "po-" means along; unlike the word "po", which means after. Pomorze, therefore, means Along the Sea. This construction is similar to toponyms Pogórze (Along the Mountains), Polesie (Along the Forest), Porzecze (Along the River), etc. Earliest sources Pomerania was first mentioned in an imperial document of 1046, referring to a Zemuzil dux Bomeranorum (Zemuzil, Duke of the Pomeranians). Pomerania is mentioned repeatedly in the chronicles of Adam of Bremen (c. 1070) and Gallus Anonymous (ca. 1113). Terminology and attributal of subdivisions Already the territorial designation "Pomerania" lacks a universally accepted definition since it may refer either to combined Hither and Farther Pomerania only (in German contemporary and historical usage) or to Hither and Farther Pomerania combined with Pomerelia (in Polish contemporary and historical usage). As a consequence, the term "West Pomerania" is ambiguous, since it may refer to either Hither Pomerania