West Prussia (German: Westpreußen; Kashubian: Zôpadné Prësë; Polish: Prusy Zachodnie) was a province of the Kingdom of Prussia from 1773–1824 and from 1878–1919/20, within the German Reich, which was created out of the earlier Polish province of Royal Prussia. In February 1920, Germany (after it had been defeated in 1918) handed over West Prussia's central parts to become the so-called Polish Corridor (i.e.