How does the tenth amendment benefit us today

The 10th Amendment is used every time the state or local government passes a law. It's what gives (in theory) the states broader power than the federal government.

It's also why the state can refuse to enforce federal laws and so the federal government often "encourages" certain laws/policies by threatening to withhold federal funding.

the answer is a) james madison.

no statements but ok.

the statement that best describes the idea of manifest destiny that was used in the 19th century would be that "it was fate that the united states would continue to  expand westward," since people thought the us was "destined" to do so.