Anyone know three major events during industrialization and urbanization?

After considering options, a student using the problem-solving process should next

Zac wanted to determine the measure of r and of ? r in the triangle below. to fine the measure of r, zac sets up the problem.42^2 + 24^2 = r 2. determine whether zac set the problem up correctly.

Which did many cities ermerge along fall line in southern us