Check all that apply.

What were some innovations in farm machinery that led to improved results in agriculture in the Great Plains?

steam-powered reaper (combine)

grain drill

cotton mill

tractor

twine binder

steel plow

self-winding watch

The correct options are:

- Steam-powered reaper (combine)
- Grain drill
- Tractor
- Twine binder
- Steel plow

The innovations in farm machinery that led to improved results in agriculture in the Great Plains include:

- Steam-powered reaper (combine): This machine revolutionized harvesting by automating the process and increasing efficiency.
- Grain drill: It enabled farmers to sow seeds in a controlled manner, improving planting accuracy and overall crop yield.
- Tractor: With the advent of tractors, manual labor was significantly reduced, as they replaced horses for plowing, planting, and other farming tasks.
- Twine binder: This device improved the process of binding grains into bundles, making it easier to handle and transport.
- Steel plow: The steel plow was more durable and efficient than traditional wooden plows, allowing farmers to cultivate the tough prairie soil.
- Self-winding watch: This invention, although not directly related to agriculture, does not contribute to improved results in farming.

To determine which of the options were innovations in farm machinery that led to improved results in agriculture in the Great Plains, we need to analyze each option based on its relevance and impact during that time period.

1. Steam-powered reaper (combine): The steam-powered reaper, also known as the combine, revolutionized harvesting by automating the cutting, threshing, and winnowing processes. Farmers could now harvest crops faster and more efficiently.

2. Grain drill: The grain drill was an innovation that allowed farmers to sow seeds in rows, ensuring more consistent spacing and depth. This improved crop yields and efficiency in planting.

3. Cotton mill: While the cotton mill is an important component of the textile industry, its impact is not directly related to farm machinery innovations in agriculture on the Great Plains. Therefore, this option can be excluded.

4. Tractor: The introduction of tractors on the Great Plains facilitated faster and more efficient plowing, planting, and harvesting. They replaced horses and significantly increased agricultural productivity.

5. Twine binder: The twine binder was an important innovation that automated the process of binding bundles of grain into sheaves. It reduced labor requirements and increased efficiency during the harvesting season.

6. Steel plow: The steel plow, invented by John Deere, was a vital innovation for agriculture on the Great Plains. It allowed farmers to break through the tough prairie sod and cultivate the land more effectively.

7. Self-winding watch: Although a self-winding watch is an innovation, it is not related to improved results in agriculture in the Great Plains and is not relevant to this question.

Based on the analysis, the options that were innovations in farm machinery leading to improved results in agriculture in the Great Plains are:

- Steam-powered reaper (combine)
- Grain drill
- Tractor
- Twine binder
- Steel plow