17 billion - 9 billion = 8 billion so the surplus is 8 billion
        
                    
             
        
        
        
This may help,
http://www.history.com/topics/robert-mugabe
        
             
        
        
        
Answer:
democracy gives citizens more of a say in the government. Democracy can also be a main reason for economic sources of growth. Hope this helps
Explanation:
 
        
             
        
        
        
Answer:
Both wealthy and poor Romans had this in common? How did life change for Rome's poor as landowners and employers brought in more slaves as cheap labor? Farmers were forced to seek jobs in the city. ... In the days before the Romans established a republic, 
 
        
             
        
        
        
I think its the executive. But it may be all of them because they balance each other out, no one is higher or lower