• The Union of Kalmar unites Denmark, Sweden, and Norway.

  • The union between Sweden and Norway is peacefully dissolved at Norway's request. This led to the creation of the first parliamentary government in Sweden.

  • Steadily improving trade conditions result in a boom period that takes Sweden from a primarily agricultural economy to an industrial one.

  • Sweden becomes a founding member of the Nordic Council, which is established to further the mutual interests of Scandinavian countries.
  • Sweden becomes a founding member of the European Free Trade Association (EFTA).

  • Sweden becomes a member of the European Union.

  • A referendum for Sweden to adopt the euro is defeated. The Swedish krona continues to be the national currency.

Sources:

BBC News open_in_new
Britannica open_in_new