In what way could the american victory at yorktown be called "lucky"?

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

What was one major effect of industrialization on american society?

Why did the french settle in new france