Free City of Danzig
The Free City of Danzig (German: Freie Stadt Danzig; Polish: Wolne Miasto Gdańsk) was a city-state under the protection and oversight of the League of Nations between 1920 and 1939, consisting of the Baltic Sea port of Danzig (now Gdańsk, Poland) and nearly 200 other small localities in the surrounding areas. The country was established on 15 November 1920, per the terms of Article 100 (Section XI of Part III) of the 1919 Treaty of Versailles, following the end of World War I. Although predominantly German-populated, the territory was bound by the imposed union with Poland, which covered foreign policy, defense, customs, railways, and post, and remained distinct from both the post-war Weimar Republic and the newly independent Polish Republic.