Which article explains how the constitution can be amended or changed

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 do all market economies have taxes to support armed forces police forces public schools and at least some form of public transportation?

How does sociology account for the cause of drug and alcohol addiction?