DSST Human Cultural Geography Exam Prep

Answer - C - Montgomery, Trenton, Columbia, and Richmond would be known as fall-line cities.

Key Takeaway: A fall line is the place where the continental bedrock and a coastal plain meet. When the fall line is crossed by a river, it will often be marked with rapids or waterfalls. Because of these features, boats typically cannot travel further inland unless locks are built on the sites. The rapid change in elevation of the water and the resulting energy release, however, makes these locations prime for mills and hydroelectric power plants. Because of this, settlements often develop where rivers cross a fall line.