Who is generally credited with being one of the fi rst people to popularize

the phrase Manifest Destiny?

(A) James Monroe

(B) John Quincy Adams

(C) Andrew Jackson

(D) John L. O'Sullivan

(E) Henry Clay

It was " (D) John L. O’Sullivan" who is generally credited with being one of the first people to popularize the phrase Manifest Destiny, since he believed that the US was "destined" to expand all the way to the Pacific Ocean.