HELP Compare this poem with your vision of America today. Using supporting evidence, answer this question: How has America changed over time?

Why did china build the great wall of china?

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

True or false the new england colonies based their economies on fishing and shipping