What war did Otto Von Bismarck conduct to unify Germany in the 19th Century?

Otto Von Bismarck conducted three wars to unify Germany in the 19th century: the Danish War (1864), the Austro-Prussian War (1866), and the Franco-Prussian War (1870-1871). The defeats of Denmark and Austria helped to consolidate German states under Prussian leadership, while the Franco-Prussian War galvanized German nationalism and led to the proclamation of the German Empire in 1871. Bismarck's strategic diplomacy and military maneuvers were crucial in achieving this unification.