The answer for this question is D
What finally enabled sturdy skyscrapers was sturdy steel, which is a mixture of metals and other elements, such as carbon, which is distinguished by low cost on one hand and strength and flexibility on the other.
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To make John get away or to make him scared of the wife and is telling him to get away
One thing that all early civilizations had in common was reliable access to fresh water. This allowed for productive farming which meant other citizens could spend their time specialize in other skills instead of running their own farms.
