Treaty of Copenhagen
1709 CE.
Shown on the map at 55.676°, 12.569°.
On 22 October 1709, during the Great Northern War, the alliance between the Russian Empire and Denmark-Norway was renewed in the Treaty of Copenhagen. Charles XII of Sweden had destroyed the previous alliance in Travendal (1700). For Russia, Vasily Lukich Dolgorukov signed the treaty in Copenhagen.
Text from the Wikipedia article Treaty of Copenhagen (1709), licensed CC BY-SA 4.0.