What is the point where rivers change from broad, deep, and slow-moving to narrow and swift?
the coastal plain
the Piedmont plateau
the fall line
the mountain ridge
1 answer
The point where rivers change from broad, deep, and slow-moving to narrow and swift is typically referred to as the fall line. This natural boundary separates the coastal plain from the Piedmont plateau and is characterized by a sudden drop in elevation, causing the rivers to become more narrow and faster-moving.