What authority does the supreme court have over states?

The Supreme Court is the final judge in all cases involving laws of Congress, and the highest law of all — the Constitution. The Supreme Court, however, is far from all-powerful. Its power is limited by the other two branches of government. The President nominates justices to the court.

Yes you are cute answer theories to explain the colonization of the new world the last great habitable landmass to be occupied by humans focus on the bering land bridge, or beringia, which emerge by siberia and alaska the last ice age.