The correct answer is: because he can react to emergencies more quickly than Congress. 
The president can appropriate government money in times of a disaster, to react to emergencies quicker than the Congress. 
This situation only happens in times of emergency, in which the President is allowed to override the Congress and deliver executive orders without the Congress permission. 
These emergencies are declared when: there is an armed conflict, a natural disaster, civil unrest, etc. 
 
        
             
        
        
        
It protects the innocents from harm
        
             
        
        
        
As American forces approached Japan, Japanese forces fought to the end, preferring to kill themselves rather than surrender.Hope this helped!
        
             
        
        
        
There was a severe economic depression world-wide