Which of the following has made american culture more accessible to the rest of the world? a. scientific research b. imports c. the internet d. immigration i wanna say c

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