Because  the blacks needed a period of probation and instruction. A period is long enough for the black to have forgotten something of the condition as a slave. 
        
             
        
        
        
Answer:
The answers are Ancient China and Mesopotamia
Explanation:
 
        
                    
             
        
        
        
Well, when icebergs melt in Antartica and in Greenland this causes the sea level to rise which creeps up on beaches and can take land and submerge it into water.
 
        
             
        
        
        
Yes, it is true that James Madison promised that the Bill of Rights would be added to the Constitution, since many people were afraid that without this Bill of Rights the Constitution would trample of people's individual liberties.