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The advantages of the ball machines has to be that they are consistent, they helps one work out, will help to improve return shots, one can use them alone or with others.
They use machines so people don't have to work as hard.
Humans created machines to help them selves. But machines enslaved humans.
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The first industry to use simple machines (levers, wheels, wedges...) - farming The first industry to use complex machines- milling The first industry to use powered machines- textiles The first industry to use engines- mining The first industry to use robots - auto-manufacturing
One reason for the Egyptians successful farming ws their wise use of irrigation.
Farm mechanization is the study of machines which are useful in agriculture.
The farming which is performed on a large scale, with the help of machines like threshers, harvesters, tractors etc. is called commercial farming. Extensive commercial farming started with the advent of green revolution. With the use of this farming pattern the world cereal production rose by 50 percent between 1970 to 1990.
One of them were a Hoe.
they used one direction
Farming in the early 1800's was difficult and tiring. Manual labor was the only way to get tasks done. Manual labor means the jobs done by hand, without the help of machines. The larger the farm, the more laborers it took to do the work. Inventors in the 1800's, some of whom were farmers themselves, created new machines to help make farming easier. Using machines to do work is called mechanization. Mechanization dramatically changed farming in the United States. A farmer was no longer limited to a "walking plow" but could buy a wheeled one that was pulled by horses. Many farms increased in size because farmers could do more work in less time as a result of the mechanization use on farms.
aiding the development of farming was the use of irrigation and wind mills.