Answer:
He claimed the Frontier Thesis or Turner Thesis and it is is the argument advanced by historian Frederick Jackson Turner in 1893 that American democracy was formed by the American frontier.
Answer:
I believe it's the 2nd, 3rd, 4th, & 5th answers.
Because humans make an impact on ever y part of earth in many ways and the geographic part is also related to it because we make an impact to those different environments we visit.
D.Louisiana left the Union immediately.they succeeded from the United States on January 26th 1861
