Finland–Sweden border border continues south into the northern Baltic Sea to a point where it meets the zone border of Estonia. The tripoint between the economic zones is defined by a treaty signed in 2001. The Finnish–Swedish border was created in 1809 by the Treaty of Fredrikshamn, as Sweden ceded Finland over to Russia. The course of the border was described in the fifth article of the treaty, without great detail. The borders were agreed to be the Sea of Åland, the Gulf of Bothnia, and the rivers Tornionjoki and Muonionjoki. Islands in the sea belonged to whichever country was the nearest
Poland–Russia border border is 232 km long. For most of this length, the Polish side is in the Warmian-Masurian Voivodeship; the extreme east is in the Podlaskie Voivodeship, and the westernmost segment (on the Vistula Spit) in the Pomeranian Voivodeship. 210 km of the border is land and 22 km is sea. The official demarcation of the boundary was finalized March 5, 1957, in the following terms: When Poland joined the European Union in 2004, this border became one of the borders between the European Union and the non-EU countries. It is one of the five borders that Russia shares with the