プロシア
a former kingdom in north-central Europe including present-day northern Germany and northern Poland
現在の北ドイツと北ポーランドを含む北部中央ヨーロッパのかつての王国
in the 19th century Prussia led the economic and political unification of the German states
19世紀にプロシアはドイツ州の経済的、政治的統一をはかった