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The first tractor by Benjamin Holt is invented and it is steam-powered.
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John Froelich invented the gas-powered tractor in Clayton County Iowa. It had more power than the first tractors.
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Tractors could now have a PTO shaft to take power from the tractor to another source.
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Tractors now can have open gears that allow you to change speeds.
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Tractors now have a three-point hitch. They can now hook up to their equipment easier than before.
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Rubber tires are now used on tractors. They made it easier to go through all of the rough terrains in their fields.
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Tractors can now have a front loader. This allowed tractors to scoop up materials.
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Tractors can have autosteer which allows them to drive in a straight line for planting, cultivating, and spraying.
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The 9rx was a tractor that had 4 tracks in place for four wheels. It can have up to 620 hp. It's also a four-wheel-drive tractor so power gets distributed to all the tracks.
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They are now working on building tractors that don't need an operator to drive it. The tractors will be able to drive themselves. There are some out now but not totally developed yet.
