John L. O'Sullivan

Events

1

Episodes

2

Years

1845

Every event in Historedia whose sources name John L. O'Sullivan, with the role they cite and all of that event’s episodes. This is not a biography, and mentions are grouped by name, so two people with the same name can share this page.

Events and episodes

1. John L. O'Sullivan coins 'manifest destiny' in the United States Magazine and Democratic Review

   1845

   Role: Editor and political writer

   1. 1July–August 1845 · The United States Magazine and Democratic ReviewPublication of 'Annexation' Editorial

      O'Sullivan published the editorial 'Annexation' in The United States Magazine and Democratic Review, marking the first appearance of the phrase 'manifest destiny' in 1845.

   2. 2December 27, 1845 · New York Morning NewsAddressing the Boundary Dispute

      On December 27, 1845, O'Sullivan addressed the ongoing boundary dispute with Britain in his newspaper, the New York Morning News.

Sources

1. John L. O'Sullivan Wikipedia, revision of 2026-09-23