Italian Prime Minister Cavour ordered the Italian diplomat in Sweden Marquis Migliorati to communicate to Danish king Frederick VII the assumption of Victor Emmanuel II as King of Italy.
The Italian side expressed doubt on a Danish recognition of the newly established Italian state as Denmark was engaged in a dispute with Prussia pertaining to the rights over German–speaking Schleswig-Holstein.
Nonetheless, the Danish people had strong sympathy for Italy inducing the king to grant recognition.
[8] King Frederick VII wrote a letter to king Victor Emmanuel II on 2 September 1861 in which it was stated that Denmark recognized the Kingdom of Italy and an Italian legation was established in Copenhagen.
[8] In May 1864, the two countries signed a commercial treaty to strengthen trade.