The correct answer to this very question today is
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Sodium and aluminum are in the same period, and therefore have similar chemical properties. It's B.
answer: i think it's a complex compound
explanation: i dont know i could be wrong
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.
Hope this helps!