<span>The event in the Jefferson presidency that changed the balance of power in American government was the case, Marbury vs. Madison. This case was the first time that the Supreme Court ruled that they could essentially overrule the presidency or congress if they felt their decisions or bills were unconstitutional. This brought about another set of checks and balances to the American government.</span>
Answer:
In the context of the American Civil War (1861–65), the border states were slave states that did not secede from the Union. ... To their north they bordered free states of the Union and to their south (except Delaware) they bordered Confederate slave states.
Explanation:
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