Brandenburg-Prussia was a historical state in Central Europe that emerged in the late 15th century. It began as the Margraviate of Brandenburg and expanded significantly under the rule of the Hohenzollern dynasty. By the 18th century, it became a powerful kingdom, known for its military strength and efficient administration. The state played a crucial role in the formation of modern Germany. In 1701, Frederick I crowned himself King in Prussia, marking the rise of the Kingdom of Prussia. This kingdom later became a leading force in the unification of Germany in the 19th century, influencing European politics significantly.