Concurrent powers are powers that are shared by both the State and the federal government. These powers may be exercised simultaneously within the same territory and in relation to the same body of citizens. These concurrent powers including regulating elections, taxing, borrowing money and establishing courts.
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Explanation:
As per the question, the author's key purpose of including this paragraph include 'to inform the reader about the location' and 'to entertain the readers by showing how dramatic the situation is.
1. it stopped the spread of slavery north of the Ohio river
Absolutely not because this would mean we'd not work with International countries and many other things. Look up the definition of Isolationism and come up with your own answer in your own words because it's asking you to provide your own opinion