There are many ways
the policies and achievements of Muhammad's successors helped the Arab world.
One of the main achievement was to unite the Arab under one flag instead of
various tribes and communities, as the successors of Muhammad used the term
"Khalifa" which was considered a unanimous leader of all the Muslims
thus any territory that came under Islamic rule or any people who accepted
Islam were united behind "Khlifa" instead of various leaders and
tribal heads.<span>
As there was a central system established in that time of
succession, more focus was placed on developmental structures. For example in
the time of Umar, the second successor various facilities were built for the travelers
and those out on the road.
<span>Trade and commerce evolved due to peace and stability
provided by the central government as opposed to earlier times when caravans
were looted in other tribal territories. </span></span>
 
        
             
        
        
        
The answer is C. Everyone, even the king, has to obey the law. 
The Magna Carta (1215) was the first law that dictated that even the king was a subject to law.
        
                    
             
        
        
        
The South had always been less enthusiastic about the railroad industry than the North; its citizens preferred an agrarian living and left the mechanical jobs to men from the Northern states. The railroads existed, they believed, solely to get cotton to the ports.
        
                    
             
        
        
        
<u><em>Answer: His goal was to get rid of All Jews and to Rebuild Germany in his image and tried to be noticed and gain political power</em></u>
<u><em>Explanation: He wanted them all to go to a concentration camp to die but it backfired since others were now aganist him so his wife and him killed themselves, this all happened because he wasn't accepted in a france Art school and thought that jews were the cause of all his problems</em></u>
<u><em>Hope this helped</em></u>