Between 1864 and 1871, something extraordinary happened in the heart of Europe. In three short wars, each following hot on the heels of the last, the Continent's great powers failed to unite to contain an ascendant Prussia. The failure to build a coalition against Prussia -- during the Danish-Prussian War of 1864, the Austro-Prussian War of 1866 and the Franco-Prussian War of 1871 -- resulted in the unification of Germany under Prussian dominion in early 1871. A few decades later, Germany was the leading power on the European continent, rivaling Great Britain for influence in global economic and political affairs. Its power would continue to grow, virtually unchecked, until 1914. How it managed such a feat is important when considering China's ambitions today....