Which best describes the effect of the fall line in georgia

i think it's  below the fall line , navigation is nearly impossible.

Explanation:

lines of numerous  waterfalls, as the edge  of a plateau , where streams pass  from resistant rocks  to a plain of weak ones below. such a line  also marks  the head of navigation, or the inland limit  that ships can reach  from a river's mouth; because navigation  is interuppted  both upstream and downstream, important cities often occur along the fall line . in the eastern United States , a fall line exists  between the appalachian , piedmont , and the atlantic  coastal plain ; waterfalls  or rapids occur  on all the principal rivers (  the delaware, schuylkill , patapsco , potomac , james and savannah rivers )  Augusta ga  , baltimore , trenton and etc,  occur along this fall line.  other examples  are the fall lines that  seperate the  narrow coastal plains of Africa, Western Australia , Brazil ,and India from their  interior continential  shields.

is there multiple

the answer is they believed george iii would never give them their freedom.