context: The Free City of Danzig (German: Freie Stadt Danzig; Polish: Wolne Miasto Gdańsk) was a semi-autonomous city-state that existed between 1920 and 1939, consisting of the Baltic Sea port of Danzig (now Gdańsk, Poland) and nearly 200 towns and villages in the surrounding areas. It was created on 15 November 1920[1][2] in accordance with the terms of Article 100 (Section XI of Part III) of the 1919 Treaty of Versailles after the end of World War I.
question: When was the Free City of Danzig established?
answers.text: 15 November 1920 15 November 1920 15 November 1920