does the constitution address all of the concerns that arose during the time of the articles of confederation? Why or Why not?

The correct answer to this open question is the following.

Although there are no options attached we can say the following.

I consider that the constitution addresses most of the concerns that arose during the time of articles of confederation?

Let's remember that the Articles of Confederation was the first Constitution of the United States. It had thirteen sections. Both the most relevant articles were:

2.- The sovereignty of the states that had their own powers in their territory.

4.- Free pass for American colonists when traveling across the states, except for criminals.

6.- Central government power to make international treaties and the power of the states to raise an army.

7.- The states decide their military leaders.  

8.- The states are the ones who could collect money through taxation. The central government needed money, it had to ask for it from the states.

This meant that the central government was week under the Articles of Confederation and Congress could not collect money through taxation. When the government needed money it had to ask for it from the states. It could not raise an army, either.

That is why delegates met at the Constitutional Convention of Philadelphia, Pennsylvania in 1787. Federalists and Antifederalists debated on the new form of government for the country and created the Constitution.

Federalists supported a strong form of government. Antid¿federalists, not. For states to sign it, Antifederalists like Thomas Jefferson demanded to include many rights for the citizens and respect to the sovereignty of the states. That is why Federalists James Madison drafted the Bill of Rights, the first ten Amendments to the United States Constitution.

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.