How was slave labor distributed? (%)

How and why did the 27th amendment modify the authority of congress to set its own pay

What were some benefits of the lewis and clark expedition?

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.