In a space of little over 30 years, the world was transformed. The European great powers were no longer ascendant, even if that was not yet fully revealed to them, and the US, a regional power as of 1914, now belonged to the wholly new category of "superpower." What happened in this short period to work such a dramatic change? The answer lies neither in Europe alone nor in the West more broadly, and one of the virtues of this bold new international...