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Lyndon B. Johnson (1908-1973) was the 36th president of the United States, assuming the office after the assassination of President John F. Kennedy in November 1963. Prior to serving as Kennedy's vice president, Johnson had long represented Texas in the United States Senate.

Johnson inherited Kennedy's foreign policy and most of his advisers. Believing he was carrying out Kennedy's legacy, Johnson massively escalated American involvement in the Vietnam War.

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