Explain why people living in the northern areas of the Fertile Crescent moved into other areas? What finally allowed people to settle in southern Mesopotamia?

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.