Relating to Prussia, a powerful German kingdom that existed until 1947, known for military discipline and blue uniforms.
From Prussia, a region in Eastern Europe that became a major power. The name possibly comes from a Baltic people, the Prussians, from their own language meaning 'dwellers by the river.'
Prussian blue—the color of their uniforms—was actually invented by accident in a chemistry lab and became so iconic that it now defines an entire nation's image.
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