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OpenStudy (anonymous):

The early river valley civilizations that emerged after the Neolithic Revolution influenced modern-day practices by instituting the ______. A. exchange of excess goods and services B. concept of equality for all people in a society C. use of algebra to perform advanced calculations D. use of steel to strengthen buildings

OpenStudy (anonymous):

@awright2014

OpenStudy (anonymous):

@cliffordtapp

OpenStudy (cliffordtapp):

i think it is a

OpenStudy (anonymous):

Thanks

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