What is the most important difference between trial and appaellate courts?

Explanation:

Whereas trial courts take care of both factual and legal disputes, appellate courts only look into claims that a trial judge or jury made a legal mistake during the case.

The major difference between the trial courts and the appellate courts is the function of the jury. A jury normally appointed, is a group of citizens who make decisions about the case as a result of listening to all the facts in the court room. A jury is used sometimes in trial courts to aid the decision factor in a case. Appellate judges determine the outcome of all appeals.  The appellate judges want to know whether the law was applied accurately.

protectionism fosters competition and keeps price regulated is not an argument in favor of protectionism.