under regulated , the national government sets up regulations and that the states must follow

Constitution; laws

Explanation:

Constitution is being put in place to regulate the society. They are set of laws and instructions which everyone in the society must live by and failure to do so would result to facing the penalty. Without constitution, states would be difficult to govern and people would do as they want causing lawlessness in the society. The Constitution guides the states to act right.

answer; /// the answer to the first question is (b) it began when people first deliberately seeds; /// and (d); // it gave people a steady food supple for the first time;

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the correct answer is :

{b.}   ( american workers lose job opportunities )

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    -sprinkles