Prussia (region)Prussia (Old Prussian: Prūsa; Preußen; Prūsija; Prusy; Пруссия, Pruthenia/Prussia/Borussia) is a historical region in Europe on the south-eastern coast of the Baltic Sea, that ranges from the Vistula delta in the west to the end of the Curonian Spit in the east and extends inland as far as Masuria. This region is often also referred to as Old Prussia. Tacitus's Germania (98 AD) is the oldest known record of an eyewitness account on the territory and its inhabitants.
MazoviaMazovia or Masovia (Mazowsze) is a historical region in mid-north-eastern Poland. It spans the North European Plain, roughly between Łódź and Białystok, with Warsaw being the unofficial capital and largest city. Throughout the centuries, Mazovia developed a separate sub-culture featuring diverse folk songs, architecture, dress and traditions different from those of other Poles. Historical Mazovia existed from the Middle Ages until the partitions of Poland and consisted of three voivodeships with the capitals in Warsaw, Płock and Rawa.
MasuriaMasuria (, Masuren, Masurian: Mazurÿ) is a ethnographic and geographic region in northern and northeastern Poland, known for its 2,000 lakes. Masuria occupies much of the Masurian Lake District. Administratively, it is part of the Warmian-Masurian Voivodeship (administrative area/province). Its biggest city, often regarded as its capital, is Ełk (Elk). The region covers a territory of some 10,000 km2 which is inhabited by approximately 500,000 people.
Slavic languagesThe Slavic languages, also known as the Slavonic languages, are Indo-European languages spoken primarily by the Slavic peoples and their descendants. They are thought to descend from a proto-language called Proto-Slavic, spoken during the Early Middle Ages, which in turn is thought to have descended from the earlier Proto-Balto-Slavic language, linking the Slavic languages to the Baltic languages in a Balto-Slavic group within the Indo-European family.