Manifest Destiny was a distinctly racist concept in the first place. The idea was that white man was destined to conquer the west and this meant subduing anyone else who happened to live there. White man alone was entitled to this "destiny". It used the ideas of Jacksonian democracy of a "white man's democracy" to develop these beliefs.
He believed he had public support to continue his social programs.
Answer:
c separation of powers(sorry don't have explanation)
Low taxes, few government regulations and copetition encouraged people to invest in new industries.
