They guy your looking for is Eli Whitney
        
                    
             
        
        
        
Answer:
B. Who is Hippocrates?
Explanation:
Hippocrates was a Greek philosopher and physician popularly regarded as the father of medicine. He was credited as the first person to explain the process of disease in relation with the human body. The old superstitious belief about illness before Hippocrates theory was that illness were caused by wrath from a god or evil spirit. Hippocrates demystified this belief by studying human body with rational explanations to symptoms of illness. He explained that abnormal behavior was due to some biological process in the body.
 
        
             
        
        
        
Northerners wanted Lincoln to free the slaves and, thereby, allow them to join the Union army.Some signed up as Union soldiers, while other free African Americans formed their own units and fought for the Union.In what ways did African American soldiers face more difficulties than white soldiers did?
Some white Union soldiers did not want the African Americans to fight with them. African American soldiers were paid less than white soldiers. And African American soldiers who were captured by the South were often executed or sold into slave labor. In total , it was to have more man power & beat the confederates . 
        
             
        
        
        
<h2>
Following theories can be put up about how hominids evolved:</h2>
- <u>The theory of unused organs:</u>
 
As the methods that the hominids used to find their food changed, they stopped using some organs of their bodies. As the use of these organs stopped, their bodies evolved to eliminate those organs.
- <u>The theory of improved posture:</u>
 
As the hominids started relying on their legs for the purpose of locomotion and started using their hands for other purposes, their posture went on becoming more and more erect.
- <u>The theory of improved comprehension:</u>
 
Along with the development of other body parts, the brain of the hominids also developed to become more efficient. This made the hominids develop the ability of comprehension.