The enlightenment idea of separation of powers led to a) giving authority to the president and vice president. b) granting a social contract between colonists and governments. c)forming three branches of government in the united states. d)forming a powerful government that could protect its people.

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