James K. Polk. One author notes, “Manifest Destiny touched the issues of religion, money, race, patriotism and morality. These clashed in the 1840s as a truly great drama of regional conflict.” ...

Polk, Trump, and Manifest Destiny. By Chris Stirewalt. ... The original idea, though, dated far before newspaper columnist John O’Sullivan coined the phrase in 1845 in support of Polk’s ambitions.

One author notes, “Manifest Destiny touched the issues of religion, money, race, patriotism and morality. These clashed in the 1840s as a truly great drama of regional conflict.” ...