i think its the second one
 
        
             
        
        
        
Wdym? What is ur question?
        
                    
             
        
        
        
Buffalo Soldiers originally were members of the U.S. 10th Cavalry Regiment of the United States Army, formed on September 21, 1866, at Fort Leavenworth, Kansas. This nickname was given to the "Negro Cavalry" by the Native American tribes they fought in the Indian Wars.
^^^^^^
number 5
        
             
        
        
        
That that cause was the greatest cause ever/
        
             
        
        
        
Answer:
Economic, demographic, and technological changes likewise inspired and shaped antebellum reform. Although America remained predominately a rural and small-town nation into the twentieth century, its cities were growing after 1820.
Explanation: