The human species first appeared in Africa... The first settlements, however, were in the middle east
        
                    
             
        
        
        
They didn't because they weren't focused on it. It was the age of technological advancement, industry, wild parties and rich city slickers. The so called roaring twenties. Everyone was focused on factories and development that they didn't pay attention to the farmers. 
        
             
        
        
        
Answer:
Thomas Paine (1737–1809) was a radical writer who emigrated from England to America in 1774. Just two years later, early in 1776, Paine published Common Sense, a hugely influential pamphlet that convinced many American colonists that the time had finally come to break away from British rule.
Explanation:
hope this helps 
 
        
             
        
        
        
Should seem pretty obvious but the traders gained goods from their trade which is a benefit and slaves being slaves, suffered.