Original sentence: According to the treaty Sweden ceded parts of the provinces Laponia and Västerbotten (east of Tornio River and Muonio River), Åland (Ahvenanmaa), and all provinces east thereof.The Treaty of Hamina (Haminan rauha in Finnish and Freden i Fredrikshamn in Swedish) was a peace treaty concluded between Sweden and Russia on September 17, 1809.The ceded territories came to constitute the Grand Duchy of Finland, to which also the Russian 18th century conquests of Karelia including small parts of Uusimaa and Savonia (later to be called Old Finland) were joined in 1812 as Province of Viipuri.The treaty concluded the Finnish War and was signed in the Finnish town of Hamina
Edited sentence: According to the treaty Sweden ceded parts of the provinces Laponia and Västerbotten (east of Torne River and Muonio River), Åland, and all provinces east thereof.The Treaty of Hamina (Freden i Fredrikshamn in Swedish and Haminan rauha in Finnish ) was a peace treaty concluded between Sweden and Russia on September 17, 1809.The ceded territories came to constitute the Grand Duchy of Finland, to which also the Russian 18th century conquests of Karelia including small parts of Nylandia and Savonia (later to be called Old Finland) were joined in 1812 as Province of Viipuri.The treaty concluded the Finnish War and was signed in the present-day Finnish town of Hamina