. . "The Treaty of Copenhagen was signed on 27 May 1660, and marked the conclusion of the Second Northern War between Sweden and the alliance of Denmark-Norway and the Polish-Lithuanian Commonwealth. This treaty was a smaller follow-up treaty to that of the Treaty of Roskilde, which this then declared the official boundaries of Denmark, Sweden, and Norway; boundaries which are almost exactly the same to this day."@en . . . . . . . . . . . . "Treaty of Copenhagen (1660)"@en . . . "The Treaty of Copenhagen was signed on 27 May 1660, and marked the conclusion of the Second Northern War between Sweden and the alliance of Denmark-Norway and the Polish-Lithuanian Commonwealth. This treaty was a smaller follow-up treaty to that of the Treaty of Roskilde, which this then declared the official boundaries of Denmark, Sweden, and Norway; boundaries which are almost exactly the same to this day."@en .