Adefines the decision-making rules for a nation, thus limiting what a government can and cannot do.

The correct answer is: "A constitution defines the decision-making rules for a nation, thus limiting what a government can and cannot do."

Explanation:

A constitution is a written document which contains the basic principles and laws of a nation and determines the powers and obligations of the government and guarantee certain rights to the people in it. The constitution also establishes the powers division, an essential aspect of democracy. Constitutions may have minor modifications or they can be written from scratch through a constituent assembly.

cannabis

explanation:

(assuming this is the us) google it. law states you can't have weed.

trade regulation is a field of law, often bracketed with antitrust (as in the phrase “antitrust and trade regulation law”), including government regulation of unfair methods of competition and unfair or deceptive business acts or practices. antitrust law is often considered a subset of trade regulation law. franchise and distribution law, consumer protection law, and advertising law are sometimes considered parts of trade regulation law.

in general the theory of economics says that the more open to trade a country is the better   the result for the same country and the whole economies.

in real life countries impose taxes, quotas, etc which is not so good for the economies.

this kind of commercial war between the usa and china is slowing down the growth of the whole world so we can say that it is a draw back of trade regulations. and the free trade agreements are benefits of trade regulations.