Herbert Hoover had been president for less than a year when the Crash of 1929 initiated the Great Depression, an epochal event in American history that would place his name near the bottom of presidential rankings. But the engineer and business magnate, who made several fortunes in his 20s, is also remembered as a great humanitarian for feeding several million starving Belgians during World War I, and for introducing a variety of innovations in American life, from standardized traffic lights to milk cartons. Mo Rocca examines Hoover's remarkable rise (from humble beginnings to the White House) and his remarkable fall.

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