1. CROP ROTATION: the system of varying successive crops in a definite order on the sameground, especially to avoid depleting the soil and to control weeds,diseases, and pests.
2. MOULDBOARD PLOUGH/PLOW: An implement or machine designed to move earth, snow, or other material by means of a strong blade.
3. WATER MILLS: A watermill or water mill is a mill that uses moving water as its power source. It is thus a structure that uses a water wheel orwater turbine to drive a mechanical process such as milling (grinding), rolling, or hammering. Such processes are needed in the production of many material goods, including flour, lumber, paper, textiles, and many metal products. Thus watermills may be gristmills, sawmills, paper mills, textile mills, hammermills, trip hammering mills, rolling mills, wire drawing mills, and so on.
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