Answer: It's c. Threatening
Explanation: Because Ominous means something bad or unpleasant is going to happen
A) The urbanization of the United Stats quickened due to technology improvements.
-This whole paragraph is on the subject of how technology quickly urbanized the United States. All of the other answers are factors that caused this to happen.
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It was because both the inventors of the products had to
face rivalry when promoting their products. In order for their products to hit
the market with excellent sales reports, both the inventors had to make an
effort show off. Both inventors refined their products to make better versions
and make them successful in the market.
God cursing Ham is an allusion to a biblical story in Genesis 9 where Noah cursed his son Ham to forever be a servant to his brothers, making every person descended from Ham be scripturally
enslaved. Frederick Douglass uses this allusion to explain how since slaveholders justify slavery with this bible story, very soon this will not work because many slaves are being born to white fathers.
The neolithic revolution was also called the pastoral revolution