There have been many government actions meant to help unify the nation, but the greatest was done when the Articles of Confederation were replaced by the Constitution, since this action put into place a much stronger-central government and "united" the states. 
        
             
        
        
        
Answer:
<em><u>C</u></em><em><u>.</u></em><em><u> </u></em><em><u>Charles Dickens</u></em>
Explanation:
The French Revolution comes to vivid life in Charles Dickens's famous novel about the best of times and the worst of times…
 
        
             
        
        
        
I would say the 4th one 
Sorry if it’s wrong
        
             
        
        
        
Barbarian attacks caused the collapse of the Western Roman Empire.