The Kingdom of Prussia was a significant German state that existed from 1701 until 1918. It emerged from the Duchy of Prussia and became a major European power, especially during the 19th century. The kingdom played a crucial role in the unification of Germany and was known for its strong military and efficient bureaucracy. At its height, the Kingdom of Prussia included territories such as Silesia, Pomerania, and West Prussia. Its capital was Berlin, which became a cultural and political center. The kingdom's influence waned after World War I, leading to its dissolution and the establishment of the Weimar Republic.