I Believe that would be the opium war?
        
                    
             
        
        
        
It is b, because my teacher had once taught me about that.
        
                    
             
        
        
        
<span>Valentina Tereshkova  
( </span>espère que cela a aidé)
        
             
        
        
        
I think that the answer is D
        
             
        
        
        
Checks and balances. Each branch “checks” the power of the other branches to make sure that the power is balanced between them.