普鲁士 (Prussia) was a powerful northern European kingdom that became the nucleus of the German Empire in 1871 under Otto von Bismarck. Known for its highly disciplined military culture, Prussia's influence on European history was immense. The state was formally dissolved after WWII in 1947.
普鲁士蓝 (Prussian blue), the deep blue pigment, was accidentally discovered in Berlin in 1704.
