The individual known for their role in the unification of Germany was Otto von Bismarck. As Chancellor of the Kingdom of Prussia, Bismarck played a pivotal role in orchestrating three significant wars: the Danish War, the Austro-Prussian War, and the Franco-Prussian War, which ultimately led to the unification of German states in 1871. His realpolitik approach focused on pragmatic decisions, often using diplomacy alongside military action to achieve political goals. Bismarck's leadership and vision were instrumental in creating a powerful, unified German Empire, altering the balance of power in Europe.