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Franklin Delano Roosevelt was an influential American statesman who served four historic terms as President during WWII and the Great Depression.

Upton Sinclair was a muckraking author whose influential works exposed industrial and socio-political injustices.

Charles A. Beard was an influential American historian, political scientist, and educator, renowned for his critical analysis of the U.S. Constitution.

Louis D. Brandeis was an American jurist, advocate for social justice, and Associate Justice of the Supreme Court, who significantly influenced progressive legal thought and policy.