Why was the concept of manifest destiny so influential in nineteenth century america?

United States believing that it’s their right and duty to spread across the North America continent is what we call the Manifest Destiny.  This concept was so influential in the nineteenth century in America because this is the idea which states that it is their God- given right to conquer the lands in the West. It is because of this Manifest Destiny that great happenings in the History of the world took event. Fuel western settlement, Native American removal, and war with Mexico were pushed by this attitude. America was able to do this through treaties, settlements and war. In an article on the annexation of Texas which was published in the July- August 1845 edition of the United States Magazine and Democratic Review, John L. O’Sullivan, who was also the editor, introduced Manifest Destiny.  

pizarro staged a mock trial and found atahualpa guilty of revolting against the spanish, practicing idolatry, and murdering huáscar, his brother. atahualpa was sentenced to execution by burning. he was horrified, since the inca believed that the soul would not be able to go on to the afterlife if the body were burned.

when christopher columbus arrived on the bahamian island of guanahani (san salvador) in 1492, he encountered the taíno people, whom he described in letters as "naked as the day they were born." taíno influences survived, however, and today appear in the beliefs, religions, language, and music of caribbean cultures.

ad 1492: taíno meet columbus; “new world” gets new diseases. in the bahamas, the taíno are 125,000 strong in 1492 when they encounter the crew and the italian captain of three spanish ships. christopher columbus seeks a shorter sea route to india to spain get a foothold in the profitable spice trade.

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