Answer:
A, because of the cataracts.
Explanation:
The cataracts made the river too dangerous to travel in as the rock filled rapids would destroy the boat, and destroy them.
Answer:
D. Americans believed they had a religious purpose to spread over the entire continent.
Explanation:
After the independence, recognized by England in 1783, a huge , unexplored and uncolonized territory lay west of the territory of the original US 13 colonies. Some movements and leaders of the Second Great Awakening encouraged pushing the frontier and settlement in the west.
I think the answer is b but please let me know if it was right