the answer is c irrigation trade  and transportation hope this helps
 
        
                    
             
        
        
        
The main way in which geographic and economic differences between regions led to increased sectionalism in the US was that the South was entirely agrarian and depended heavily on slavery, while the North despised the institution of slavery. This eventually led to the Civil War. 
        
             
        
        
        
Leo III initiated a ban on the use of images for worship
Leo III accomplished many military milestones which made him popular and also gave him the confidence to pursue his religious policies. By banning the use of religious images, Leo II provoked a century of conflict within the empire
 
        
                    
             
        
        
        
It was a prolonged drought that affected those who had come to seek economic opportunities through farming in the Midwest.<span />
        
             
        
        
        
A suicidal action in order to harm the enemy. Kamikaze soldiers are prepared to give up their lives for their cause, often due to a belief that they will be honored in the afterlife because of it.