Few events have a worst impact than the ww1. 
        
             
        
        
        
<em>if u look your Answer up  it would  tell u </em>
Explanation:
make it blue and hit the text on keybord
or look it up of phone 
 
        
             
        
        
        
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Answer:
It improved communication a lot not and enabled people to save money on transportation (its easier to call someone than write a letter and make someone on a horse ride for miles) not sure about the effects on power though.
Explanation: