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The creation of the farm tractor transformed the way in which agriculture was done. Using the replacing man hard work, and puppy inputs, production was expanded dramatically, with a lot more being done in less time. The earliest systems which would be regarded "tractors" ended up being amazing heavy steam driven machines developed in the 1870's. These appliances acquired great ability at its edge, then again overall flexibility was most certainly not a plus. International Harvester H Service+Operator+Parts Manual