What made the end of the Oregon Trail more difficult than other parts of the trail?

(1 point)
Responses

There were steep cliffs and a raging river to cross.
There were steep cliffs and a raging river to cross.

The Native Americans were not friendly there.
The Native Americans were not friendly there.

There were no places to get supplies at the end.
There were no places to get supplies at the end.

The guides would not travel that far.

There were no places to get supplies at the end.