Change this sentence to correctly include a restrictive phrase. everyone crowded around the ball player, the pitcher, who hit the winning run. everyone crowded around the ball player who hit the winning run. everyone crowded around the pitcher because he hit the winning run. because he hit the winning run, everyone crowded around the pitcher. everyone crowded around the pitcher, the ball player who hit the winning run.

The sentence that best includes a restrictive clause is option 1) “Everyone crowded around the ball player who hit the winning run.” Restrictive clauses act as adjectives since they modify the noun just before them and if removed the meaning of the sentence changes. Restrictive clauses add essential information to the sentence so they are also called “essential clauses”. They start with a relative pronouns such as who, that or whom. In this example, the restrictive clause “who hit the winning run” is modifying the noun “ball player”.  

Sentence number 2 and 3 do not have a restrictive clause but an adverbial clause of effect since they are introduced by the word “because”.

Sentence number 4 does not have a restrictive clause on it.

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.