The Franco‐Prussian War was a conflict fought between France and Prussia in 1870–71. It resulted directly from a dispute between Paris and Berlin over the candidacy of a German prince for the succession to the Spanish throne, although it occurred in a climate of increasing rivalry between the two most powerful states on the European continent. As the third and final of a series of wars, including the Prusso‐Danish War of 1864 and the Austro‐Prussian War of 1866, it marked the final chapter in Otto von Bismarck's campaign to establish Prussian dominance over Germany. Prussia's quick and unexpected victory enabled Bismarck to unite Germany into a single empire under Prussian leadership in 1871, and tipped the balance of power in Europe very much in Berlin's favor. The Franco‐Prussian War was, therefore, the conclusive stage in a sequence of events back to the outbreak of the Crimean War in 1853, which gradually destroyed the Vienna Settlement of 1815. The resentment that it caused in France can be considered a contributing factor to the outbreak of the two world wars of the twentieth century.