He resigned because he'd already had enough trouble as president. Mainly the Watergate scandal. His plan was for him to step down and if he was arrested the vice president which would then be the vice president would pardon him. Also, if he didn't resign he'd likely be impeached anyway.
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As a result of the westward expansion, there were many conflicts with the Native Americans. ... With westward expansion, more states entered the Union. This led to fierce debates about the spread of slavery to these new lands. This eventually became a factor leading to the Civil War
Explanation:
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