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First tractor
John Froelich invented the first gas powered tractor -
Upgraded tractor
Charles W. Hart and Charles H. Parr developed a two-cylinder gasoline engine -
John Deere
Released Modle C More info on John Deere -
Next tractor
New tractor for wet soil called the catipiller was invented -
Row Crop
The Row Crop was changed and made better -
Improvement
The drawbar was imporoved for tools More info... -
4- Wheel
The first 4-wheeled tractors started showing up More info on 4-wheeled tractors -
Engine upgrade
The engine was given more gears including reverse
