After World War I, the administration had to be reorganised because the Posen district was split, The eastern art of the county was handed over to Poland in 1920, according to the Versailles treaty.
The administration had to be reorganised because the Posen district was split. This was according to the Versailles treaty. This was after World War I. The eastern art of the county was handed over to Poland in 1920. This was according to the Versailles treaty. This was after World War I.