plow, also spelled plough, most important agricultural implement since the beginning of history, used to turn and break up soil, to bury crop residues, and to help control weeds.

Why was plough used short answer?

A plough was used to dig the earth for turning the soil and planting seeds.

When was the plough used?

The first real inventor of the practical plow was Charles Newbold of Burlington County, New Jersey; he received a patent for a cast-iron plow in June of 1797. However, American farmers mistrusted the plow. They believed it "poisoned the soil" and fostered the growth of weeds.