Final answer:
The Columbia River Project in Social Studies impacted Native American tribes by depriving them of their fishing livelihoods but also provided them with a new source of revenue. Scientists were employed to study the environmental effects of dam construction.
Step-by-step explanation:
The subject of this question is Social Studies.
The Columbia River Project, when considered in the context of social studies, had several impacts. It deprived Native American tribes of their fishing livelihoods as mentioned in option C. The dam construction led to the loss of traditional fishing grounds and disrupted their way of life. However, it also gave Native American tribes a new source of revenue as mentioned in option D. They were able to engage in activities like tourism, hydroelectric power generation, and land leasing to generate income.
In addition, the Columbia River Project employed scientists to study the environmental effects of dam construction as mentioned in option E. These studies helped improve our understanding of the environmental impact and informed future dam construction projects.
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