John L. O'Sullivan

John Louis O'Sullivan (November 15, 1813 – March 24, 1895) was an American columnist, editor, and diplomat who used the term "manifest destiny" in 1845 to promote the annexation of Texas and the Oregon Country to the United States.[1] O'Sullivan was an influential political writer and advocate for the Democratic Party at that time and served as U.S. minister to Portugal during the administration of President Franklin Pierce (1853–1857).

John L. O'Sullivan
John L. O'Sullivan as he appeared on the cover of Harper's Weekly in November 1874. O'Sullivan was then attending a conference in Geneva that sought to create a process of international arbitration in order to prevent wars.
United States Minister to Portugal
In office
June 16, 1854  July 15, 1858
PresidentFranklin Pierce
Preceded byCharles Brickett Haddock
Succeeded byGeorge W. Morgan
Personal details
BornNovember 15, 1813
At sea
DiedMarch 24, 1895 (1895-03-25) (aged 81)
New York City
Spouse(s)Susan Kearny Rodgers
  • John Thomas O'Sullivan (father)
  • Mary Rowly (mother)
EducationColumbia College
Known forCoined phrase manifest destiny

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