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What are four new machines that led to improved results in agriculture in the Great Plains?

seed plow

gang plow

underground plow

steam-powered thresher

tractor

gas-powered thresher

sulky plow

tractor

steam-powered thresher

gas-powered thresher

sulky plow

The four new machines that led to improved results in agriculture in the Great Plains are:

1. Seed plow
2. Steam-powered thresher
3. Tractor
4. Gas-powered thresher

To determine which four machines led to improved results in agriculture in the Great Plains, we need to identify the machines that were developed during that time and analyze their impact on agriculture.

1. The seed plow: The seed plow, also known as the drill or seed drill, was a machine specifically designed to sow seeds efficiently and accurately, ensuring that seeds were planted at the proper depth and spacing. This innovation allowed farmers to plant seeds more effectively, leading to improved crop yield.

2. The gang plow: The gang plow was a type of plow that consisted of multiple plowshares, allowing farmers to till larger areas of land in a single pass. With the gang plow, farmers could cultivate the soil more quickly and effectively, leading to increased productivity.

3. The steam-powered thresher: Prior to the development of the steam-powered thresher, farmers had to process harvested crops manually, which was a time-consuming task. The steam-powered thresher automated the process of separating grain from the harvested plants, significantly increasing efficiency and reducing the labor required.

4. The tractor: The introduction of the tractor revolutionized agriculture by providing a powerful, versatile, and mechanized tool for various tasks, such as plowing, harvesting, and hauling. Tractors were more efficient and significantly reduced the reliance on animal power, allowing farmers to cover larger areas of land and accomplish tasks in a shorter time.

Based on these innovations, the four new machines that led to improved results in agriculture in the Great Plains were the seed plow, gang plow, steam-powered thresher, and tractor.