Article iv section 1 of the constitution define the relationship between state and federal governments by

Article IV of the US Constitution establishes the responsibilities of the states to each other and the responsibilities of the federal government toward the states. Section 1 of Article IV requires that the states give “full faith and credit” to the public acts and judicial proceedings of every other state.

2. a land bridge connected asia and north america thousands of years ago.

4. crossing the land bridge would have been simple for the first migrants.

5. people might have crossed a land bridge while hunting animals.