jlorygirlmooks jlorygirlmooks

14-09-2016
History

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All of the following were invented before 1840, EXCEPT. A) power loom. B) zipper. C) cotton gin. D) mechanical reaper

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oopsydaisy oopsydaisy

15-09-2016

All of the choices given were invented before 1840 except for the zipper. The zipper was invented in 189. The correct answer is B.

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