Why did the Americans think they were so special and had the right to extend across the whole continent

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Manifest destiny was the 19th century U.S. belief that the country had a divine ... across the American continent was obvious, inevitable, and a divine right of the ... The term described the very popular idea of the special role of the United ... as people were able to complete in a week a route that had previously taken months.

Explanation:

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c 3 branches because idk why they had 3 well when:

you think of it there are still contrys with 3

is there answer chooses?