Question

Which of the following was an accomplishment of David Thompson? O A. He arranged for a sea expedition to the mouth of the Columbia River. O B. He built Fort Clatsop on the coast of the Pacific. O C. He established the first trading post in Washington. O D. He followed the Lewis and Clark trail to the source of the Columbia River. Answered​

Answer 1

C. He established the first trading post in Washington

Step-by-step explanation:

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