Question

Journalist John J. O’Sullivan wrote an influential editorial about _____.

Answer 1

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Journalist John J. O'Sullivan wrote an influential editorial about the Manifest Dynasty.

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Answer 2

John J. O'Sullivan was an important American journalist, columnist and editor who used the term Manifest Destiny, talking about the annexation of Texas and Oregon to the United States of America.

In simple words, we could say that he used the term to refer to the expansion of the United States, saying that it was their mission to expand the territory, in order to expand Democracy.