Bill Fawcett. 100 Mistakes that Changed History. New York, Berkley Books, 2010.

Collected in one volume, here are backfires and blunders that collapsed empires, crashed economies, and altered the course of the world. From the Maginot Line to the Cuban Missile Crisis, history is filled with bad moves and not-so-bright ideas that snowballed into disasters and unintended consequences. This engrossing book looks at one hundred such tipping points. Japan bombs Pearl Harbor. The Caliphs of Baghdad spend themselves into bankruptcy. The Aztecs greet the Conquistadors with open arms. Mexico invites the Americans to Texas-and the Americans never leave. And the rest is history...