I believe the correct answer is A. Please do not choose it until it is verified by someone else. I do not want you to fail the question.
 
        
             
        
        
        
Led by such men as Edmund Ruffin, Robert Rhett, Louis T. Wigfall, and William Lowndes Yancey, this group was dubbed "Fire-Eaters<span>" by northerners. ... The </span>Fire-Eaters<span> helped to unleash a chain reaction that eventually led to the formation of the Confederate States of America and to the American </span>Civil War<span>.</span>
        
             
        
        
        
Answer:
B) advancements in farming
Explanation:
the only tribes that did not have permanent settlements were the ones who chased their food. like the blackfoot tribe. because of this since food sources like buffalo were always on the move, they couldn't stay in one place. however with the advancements made in farming, they were able to stay in one place usually close to a river and grow their food while only hunting nearby wild life.
 
        
             
        
        
        
an improvement in diet of the people in Europe.
 
        
             
        
        
        
The ghazu were military expeditions or raids and after the emergence of Islam meant religious warfare. Ummah is a word from the Arabic language which means nation or community. It is commonly used to describe the collective community of people who practice the religion of Islam.