What is the answer need the right answer to plz

How has the elimination of trade barriers affected the movement of goods among member countries of the european union? a. member countries are able to produce all the goods they need. b. goods can move freely among member countries. c. member countries no longer need to trade with countries outside the eu. d. larger countries are able to import more goods than smaller ones.

Why would someone who is studying the history or culture of this time. find this text interesting important or useful?

Why can't producers offer a free good for sale?