According to Albert Barnes, their mistake was that they didn't speak against slavery. Although many of them believed that slavery was against god and against the idea that god made everyone equal, they didn't do much against it out of many reasons, either they thought it was a necessary evil or they were afraid of the public reaction.
Answer:
The Pacific Ocean was the main source of food for the people, and, therefore, the men spent a lot of time fishing along the coast. Pacific Salmon was abundant in the waters, and became the most important food resource of the people.
The answer you are looking for is Chief Joseph.
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-Austin <3
