For 10 points, name this man who called Congresses and Conferences in Berlin as imperial chancellor of Germany.
He negotiated the Convention of Gastein after a brief war with Denmark that was partially used to gain support for an army bill. He negotiated the "Three Emperor's League" with Austria and Russia, and called a conference to rework the treaty of San Stefano, reducing Russia's influence in Bulgaria. He contested with the Church in the "Kulturkampf," and tailored a message that resulted in a war concluding with the battle of Sedan, the Ems dispatch. For 10 points, name this man who called Congresses and Conferences in Berlin as imperial chancellor of Germany.
He negotiated the Convention of Gastein after a brief war with Denmark that was partially used to gain support for an army bill.
Otto von Bismarck [or Otto Eduard Leopold, Furst von Bismarck, Graf von Bismarck-