| | Vice-President of the United States (from LYNDON B. JOHNSON) -- Britannica Student Encyclopedia (Site not responding. Last check: ) |
 | | A moderate Democrat and vigorous leader in the United States Senate, Johnson was elected vice president in 1960 and acceded to the presidency in 1963 upon the assassination of President John F. Kennedy. |
 | | In contrast to many countries with parliamentary forms of government, where the office of president, or head of state, is mainly ceremonial, in the United States the president is vested with great authority and is arguably the most powerful elected official in the world. |
 | | On August 7, at the urging of President Lyndon B. Johnson, the United States Congress responded by passing the Tonkin Gulf resolution, which authorized the use of American military force in Vietnam. |
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