A farmer uses a primitive moldboard plow
to till his farmland in U.S.
From wikipedia: Mouldboard plough...
A major advance in plough design was the mouldboard plough (American spelling: moldboard plow), which aided the cutting blade. The coulter, knife or skeith cuts vertically into the ground just ahead of the share (or frog) a wedge- shaped surface to the front and bottom of the mouldboard
Farm Photo: Moldboard Plowing with Horse
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