Secretaries of State

Lewis Cass

Biography of Secretary of State, Lewis Cass

Lewis Cass was appointed Secretary of State by President James Buchanan on March 6, 1857, and assumed office the same day. He served until December 14, 1860...Read More >>

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Milestones

Prague 1968

On August 20, 1968, the Soviet Union led Warsaw Pact troops in an invasion of Czechoslovakia.

Education

A Journey Shared

For teachers: A curriculum guide exploring 200 years of U.S.-China relations.

Countries

Vietnam

A guide to the history of U.S. diplomatic relations with Vietnam.