Duchy of Berg
| County (Duchy) of Berg | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1101–1815 | |||||||||
| Left: Arms of Bergins (from around 1225), who ruled the Duchy of Berg last Right: Coat of arms of the Duke of Berg | |||||||||
| Map of the Lower Rhenish–Westphalian Circle around 1560, Duchy of Berg highlighted in red | |||||||||
| Status | Duchy | ||||||||
| Capital | 
 | ||||||||
| Common languages | German | ||||||||
| Government | Absolute monarchy | ||||||||
| Duke of Berg | |||||||||
| • 1360–1380  | Wilhelm II (first duke) | ||||||||
| • 1809-1813  | Napoléon Louis Bonaparte (Grand Duke) | ||||||||
| Historical era | Middle Ages | ||||||||
| • Emergence from Lotharingia  | 1101 | ||||||||
| • Split with County of Mark  | 1160 | ||||||||
| • United with County of Jülich  | 1348 | ||||||||
| 1521 | |||||||||
| 1609 and 1690 | |||||||||
| • Awarded to Prussia  | 9 June 1815 | ||||||||
| 
 | |||||||||
Berg (German pronunciation: [bɛʁk] ⓘ) was a state—originally a county, later a duchy—in the Rhineland of Germany. Its capital was Düsseldorf. It existed as a distinct political entity from the early 12th to the 19th centuries. It was a member state of the Holy Roman Empire.
The name of the county lives on in the modern geographic term Bergisches Land, often misunderstood as bergiges Land (hilly country).