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Mathematics 9 Online
OpenStudy (2yoututu11):

All of the following developments helped make the cattle business profitable except: A. barbed-wire fences B. new railroads and refrigerated cars. C. growing cities in the East D. cattle trails

OpenStudy (sasogeek):

this shouldn't be in the mathematics section, the biology or economics section would seem rather more appropriate seeing as we don't have an agriculture group at the moment...

OpenStudy (anonymous):

It is A and yes this should not be in the mathematics section

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