What must to occur after the president negotiates a treaty

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Correct answer choice is:

The President may establish and settle, but the treaty must be notified and permitted to by a two-thirds majority in the Senate. Just after the Senate ratifies the treaty can the President approve it. Once it is approved, it grows obligatory on all the states under the Supremacy Clause.

it's no easy i swear it's hard

c, because the american revolution was from 1765 to 1783.