John L. O'Sullivan
(1813-1895)
WHO HE WAS:
John Louis O'Sullivan was an influential American journalist, lawyer, and diplomat. He is best known for coining the term "Manifest Destiny," which became a guiding doctrine for American expansion in the 19th century. His editorial work provided a philosophical endorsement for the nation's territorial growth and played a pivotal role in shaping the discourse of American nationalism and democracy.
WHAT HE SAID:
"It is our manifest destiny to overspread the continent allotted by Providence for the free development of our yearly multiplying millions."
WHY HE MATTERED:
O'Sullivan's articulation of Manifest Destiny captured the American imagination, providing a framework that justified expansionist policies. This ideology profoundly influenced the annexation of Texas, the acquisition of Oregon, and the Mexican-American War. His vision underscored a period of significant growth and change in the United States and has left an enduring impact on the nation's history and self-conception.