Answer:
He or she could be impeached if he has abused his power, or broken a federal crime.  He should also be impeached if he has disrupted national peace or harmed another person.
 
        
                    
             
        
        
        
Answer:
C 
Explanation:
Sorry I guessed I didnt think you would see this so, here the real answer!
 
        
                    
             
        
        
        
It's a little unclear what you're asking, but I believe it's <span> B separation of powers</span>
        
             
        
        
        
"Sumerian city-states fought each other" would be the best option from the list, since this internal division led to a collapse of power that left people without protection or a solid economy.