Province of Prussia
The Province of Prussia (German: Provinz Preußen; Lithuanian: Prūsijos provincija; Polish: Prowincja Prusy; Kashubian: Prowincjô Prësë) was a province of the Kingdom of Prussia from 1829 to 1878. It was created by joining the provinces of West Prussia and East Prussia and was dissolved in 1878 when the merger was reversed.