A former German territory (northernmost East Prussia) detached by the 1919 Treaty of Versailles and placed under League of Nations/Entente administration in 1920; seized by Lithuania in the 1923 Klaipėda Revolt and governed thereafter as an autonomous region within Lithuania.
Annexed by Nazi Germany on 23 March 1939 following an ultimatum to Lithuania; restored to Lithuania (then the Lithuanian SSR) after WWII.
Dedicated scholarly account of the territory's entire disputed status from Versailles to German annexation.