In Treaty of Abo, Sweden ceded southeast Finland to Russia.
Sweden declared independence. Constitutional monarchy established. Russia took Aland Island group from Sweden.
Denmark ceded Norway to Sweden.
1 North German, Dutch, and Danish: from a pet form of Hans or Heinrich .2 English: in part the German, Dutch, or Danish name (see 1), but possibly in some cases a variant of Scottish Hanning .3 Norwegian: habitational name from a farm in Trøndelag. The first element is of uncertain origin, possibly from hein ‘whetstone’; the second element is from Old Norse vin ‘meadow’.