[1][2] Both countries are full members of the Council of Europe, of the Organisation for Economic Co-operation and Development, and of the European Union.

Decisive controversy arose due to the passing of the November Constitution, which integrated the Duchy of Schleswig into the Danish kingdom in violation of the London Protocol.

Reasons for the war were the ethnic controversy in Schleswig and the co-existence of conflicting political systems within the Danish unitary state.

[citation needed] The war ended on 30 October 1864, when the Treaty of Vienna caused Denmark's cession of the Duchies of Schleswig, Holstein, and Saxe-Lauenburg to Prussia and Austria.

[11] Melchior Lorck was a renaissance painter, draughtsman, and printmaker of Danish-German origin.

He produced the most thorough visual record of the life and customs of Turkey in the 16th century, to this day a unique source.