A major change in the balance of power within nineteenth-century Europe was spurred by the:

Question

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The unification and growth of Germany under the leadership of Otto von Bismarck in 1871 shook the balance of power in Europe. The newly formed German Empire became a major European power, challenging the dominance of traditional powers like France and Austria-Hungary. This led to a shift in alliances and tensions, ultimately contributing to the outbreak of World War I.

A Major Change in the Balance of Power Within Nineteenth-Century