*awkward silence* ha sooo any one wanna talk >.

Which of the following cultures were among the earliest known inhabitants of north america? a) mayab) incac) anasazi d) olmec

Who coined the phrase “go west and grow with the country”?

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