At some point, early man became less of a hunter and more of a farmer. The early methods were a lot of trial-and-error, conducted mostly by hand. Tilling the ground in an effort to produce food of substance that was worth the amount of labor that went into it went very slowly. Then, man started using wooden plows, pulled sometimes by animals, sometimes by people, to till their fields. While this was an improvement over a single man working the field by hand, the outcome was still low by todays standards. The iron age came about, and with it, the invention of the steel plow. This was a vast improvement over the wooden implements being used, so mans efficiency at working the soil increased again. The industrial revolution brought about the tractor, which had the strength of many horses, so it could pull multiple plows. With each one of these technological advances and the application thereof, man increased his domination of the farming arena.