On Sept. 15, 2008, Lehman Brothers, the fourth-largest U.S. investment bank, filed the biggest bankruptcy in history. The 158-year-old firm had survived railroad turmoil, the Great Depression, and the collapse of Long-Term Capital Management, but finally succumbed to crisis itself. Romaine Bostick explains how the bankruptcy reshaped Wall Street, the U.S. economy, and national politics.

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