What event ultimately ended the civil war? ?

1.     in what kind of government does a small group have a firm control over a country?  

How does the balance of trade look different in the us today vs hot it looked in the 70's

One drawback of voluntary trade is that it a.requires two groups to use a common language b.can make one group dependent upon another for necessary goods c.doesn't occur unless there is a shortage of goods for at least one group d.forces groups to rely on themselves to produce all the goods they need