Zasonie was formerly part of the German Empire. In the German Empire, the place was called Zasonie.
The place is now called Zasonie and belongs to Poland.
Historical place name | Country | Administration | Time |
---|---|---|---|
Zasonie | Russian Empire | Plonsk | 1914 |
Zasonie | Poland | Płońsk | 1919 |
Zasonie | German Empire | Plöhnen | 1939 |
Zasonie | Poland | Płońsk | 1945 |
Zasonie | Poland | Ciechanów | 1992 |