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
Human trafficking in Finland Finnish Police estimate that about 200-250 women cross the Finnish border from the East weekly to work as prostitutes in Finland. Annually about 10,000-15,000 prostitutes spend some amount of time working in Finland. These women are mostly from Russia, Estonia and to some extent from Lithuania and Latvia. A chance of these women being forced to work as prostitutes cannot be excluded. In comparison, the corresponding number of registered victims of human trafficking in Sweden was 311, 179 in Denmark, 125 in Norway, 135 in Estonia and 4,474 in United Kingdom. Finland is also known to be a transit country