The important piece of legislation that was an important step in limiting slavery would be the Northwest Ordinance of 1787. 
        
             
        
        
        
Answer:
B. 3 strike Clauses being enacted in most state laws.
Explanation:
 
        
             
        
        
        
The second one is correct:)
        
                    
             
        
        
        
They realized that nothing really changed much. The freed African-Americans still had almost no political rights and the system was controlled mostly by corrupt politicians who came from the north to become rich. The regular people still had huge farms and turned the former slave system into a system of sharecropping which was in many ways similar to slavery. The freedom was very superficial and in reality people still lived as bad as before the war.