Answer:
The Continental Divide creates a dividing line within the US where all precipitation - rain, snow, etc. that fall on the western edge eventually will flow to the Pacific Ocean and all precipitation that falls on the eastern side of the ridge flows toward the Mississippi River.
AND
A fall line is the imaginary line between two parallel rivers, at the point where rivers plunge, or fall, at roughly the same elevation. ... This line was important to early European explorers because it marked the limits of river travel for ships.
Step-by-step explanation: