How did imperialism expansion between 1600 and 1900 affect the balance of power in the world

Prior to which amendment were slaves counted as three-fifths of a personality

What is generally true of the lower house in a state legislative branch?

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