Answer:
Most whetstones have both a "coarse-grind side" and a "fine-grind side"—start with the coarse side if your knife is especially dull, then repeat the process on the fine-grind side. If you already sharpen your knife yearly and hone it regularly, you can go straight to the fine-grind side.
Explanation:
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The system of mass reproduction in manufacturing developed during the Gilded age. Hope this helped you.
The Alantic river I think