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Frank B. Kellogg, born Frank Billings Kellogg, served as the 45th United States Secretary of State under President Calvin Coolidge. He played a pivotal role in the negotiation and signing of the Kellogg-Briand Pact in 1928, which outlawed war as an instrument of national policy. Kellogg received the Nobel Peace Prize in 1929 for his efforts in promoting peace and international cooperation.