D day is the answer it was when we effort to liberate mainland Europe from the nazis
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Answer
i think it could be D. Boer
Explanation:
Thomas jefferson hoped that lewis and clark would find a water route linking the columbia and missouri river. The louis and clark expedition was shortly after the louisianna purchase. Louis and clark established trade with native american tribes, they studied animals, plants and geography
Answer:
Not 100 percent sure but I think it's C. I'm the moon.