It is called experimenter bias
experimenter bias refers to the cognitive bias that held by researchers that might cause them to subconsciously influence the outcome of the experiment.
The most likelt cause of this bias is a situation where experimenters held a certain belief or expectation for the outcome of the experiment.
Answer: John Deere made a new steel plow to make turning the prairies into farmland much easier.
Explanation:
The climate of the Midwest Region enhances its farming as it has a good climate and also, the region has a fertile, and deep soil made up of vital nutrients for the crops that are planted. Some of the crops that were cultivated include corn, squash, sunflowers, beans, sweet potatoes, etc.
A positive development of early farming in the Midwest was that John Deere made a new steel plow to make turning the prairies into farmland much easier. This was vital as it was used in the breaking down of tough soil
<em>Basically, the Ming incorporated the Song dynasty's policy of relying on the literati in managing state affairs. However, from the Yongle emperor onward, the emperors relied increasingly on trusted eunuchs to contain the literati.</em>
<em>T</em><em>h</em><em>e</em><em> </em><em>F</em><em>i</em><em>n</em><em>a</em><em>l</em><em> </em><em>A</em><em>n</em><em>s</em><em>w</em><em>e</em><em>r</em><em> </em><em>i</em><em>s</em><em> </em><em>:</em><em> </em><em>A</em><em>.</em>