The tractor history properly begins with the invention of steam power. Namely, the A. M. Archambault & Company of Philadelphia made the first farm steam engine in 1849. However, the steam engine was later improved and updated to become a steam traction engine with steering capabilities and powered wheels. Finally, it was used for operating threshing machines. Although the steam engines were portable or stationary, later, the manufacturers came up with traction engines, machines with powered wheels, allowing drivers to steer them from cabins or platforms. The steam traction engines were also crucial for operating on the threshing machine. However, the steam engine was cumbersome, costly, and unwieldy for many farmers. So, in 1876, the German inventor Nicholas Otto invented the Otto reliable internal combustion engines. The tractor motor is famous for the four-stroke principle numerous four-wheel-drive tractors use today. And they were more successful than the steam traction engines. Following Otto's example, multiple tractor companies started the engine business, with more than 100 Otto-type engines after the 1890s. And the internal combustion engine models were the most popular engine types. And during this period, it was time for gasoline tractors to make their debut to replace the steam tractors on the scene. Hence, the internal combustion engine was replaced by the gasoline engines. So, officially, the first tractor invented was the gas-powered tractor by John Froelich in 1892. John Froelich was a tractor inventor living in a small village in Iowa. He started a tractor revolution, as before his invention, farmers could only rely on steam-powered engines for plows. However, these steam-powered engines were too slow, hard to move between the obstacles, and, more vitally, the steam engines were prone to explosions. That's why Froelich came up with the beautiful idea to use a gas-powered tractor as the engine would not be prone to explosion and would be effortless to perform and maneuver well. So, the first tractor model became an instant success. Not long after Froelich's invention, gasoline-powered tractors became more popular on the tractor market, as gasoline was a commonplace fuel during the late 19th century. Hence, various gasoline tractors and traction engines using gas appeared on the tractor market. However, Froelich's gasoline engine model was the first farm machinery with forward and reverse gears. But he didn't stop here. As a successful inventor, Froelich went a step further and connected the first gasoline tractor to a thresher during harvest in South Dakota. Again, the experiment succeeded - the tractor effortlessly threshed the wheat. But, although the steam engines and steam power were desired, they didn't have the wanted quality necessary for operations. So, Froelich's threshing machine had to be more advanced. Hence, he decided to update it. This way, Froelich fathered an extended line of stationary gasoline engines, resulting in the famous John Deere two-cylinder tractor model. Stationary engines changed the industry once again. Still, by the end of the 19th century, the early tractors used brand-new gas engines. The gas tractor field flourished with the latest designs made by two engineering students at the University of Wisconsin. In 1897, Charles Parr and Charles Hart founded the Hart-Parr Gasoline Engine Company in Madison, Wisconsin, and shifted the production to Iowa near the end of the century. So, in 1901, the partners produced the first successful North American tractor for agricultural and farming tasks. The two co-founders also coined the word tractor from the term traction engine. Their first tractors were expensive and large, with huge steel wheels.