Page "Korčula" Paragraph 23

During the First World War, the island ( among other territorial gains ) was promised to the Kingdom of Italy in the 1915 Treaty of London in return for Italy joining the war on the side of Great Britain and France.

However, after the war, Korčula became a part ( with the rest of Dalmatia ) of the State of Slovenes, Croats and Serbs in 1918.

It was ruled by Italy from 1918 to 1921, after which it was incorporated into the Kingdom of Serbs, Croats and Slovenes, known from 1929 on as the Kingdom of Yugoslavia.

In 1939, it became a part of the autonomous Croatian Banate.