It has been controlled by the Teutonic Knights , the Duchy of Prussia , the Kingdom of Prussia , the German Empire , the Entente States immediately after World War I , Lithuania as a result of the 1923 Klaipėda Revolt , and the Third Reich following the 1939 German ultimatum to Lithuania .
It has been controlled by the Teutonic Knights , the Duchy of Prussia , the Kingdom of Prussia , the German Empire , the Entente States , Lithuania , and the Third Reich .