The Duchy of Berg was a historical territory located in what is now western Germany. It emerged in the late Middle Ages and became a significant political entity within the Holy Roman Empire. The duchy was known for its rich resources and strategic location, which contributed to its importance in regional politics. In the 16th century, the Duchy of Berg was ruled by the House of Berg, which played a crucial role in the development of the area. The duchy eventually became part of the Duchy of Cleves and later fell under the control of the Prussian Empire in the 18th century, marking the end of its independent status.