Explain the concept of manifest destiny and how that contributed to america's expansion?

by I tell you what -

Manifest Destiny was a 19th-century belief that the expansion of the US throughout the American continents was both justified and inevitable.

They got all hyped up on coca cola and jolly ranchers and began moving out west fast as all heck. Firstly many believed God himself approved of their decision to expend westward ( you know how fierce religious beliefs were). Then you have to remember the impact gold can have on a mans mind, they heard bout gold in California and well the reasons added up to make it seem nearly criminal not to go. Those are just some of my reasons of how the belief in manifest destiny compounded the influence upon much of the american people. ( pardon some non-factual events )

herodotus taught this. herodotus was an ancient greek historian who was born in halicarnassus in the persian empire. he is known for having written the book the histories, a detailed record of his "inquiry" on the origins of the greco-persian wars.

confedracy

supported slavery

upheld the supremacy of federal laws

believed states should be able to nullify federal laws

union

wanted to abolish slavery

supported high tariffs

upheld the supremacy of federal laws