What did otto Von Bismarck become a prime minister of?

Otto Von Bismarck became the Prime Minister of the Kingdom of Prussia in 1862. He played a crucial role in unifying Germany under Prussian leadership, utilizing a series of wars and diplomatic strategies. His tenure as Prime Minister laid the groundwork for the establishment of the German Empire in 1871, where he became its first Chancellor. Bismarck is often regarded as a key architect of modern Germany.