Test Your Knowledge With This IQ Quiz


        
                    

                
            
    
        
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#1. What year did the United States enter World War I? 
        
            
                
                    
                    1915
                
                1915            
        
        
            
                
                    
                    1918
                
                1918            
        
        
            
                
                    
                    1914
                
                1914            
        
        
            
                
                    
                    1917
                
                1917            
        
The United States entered World War I in 1917, joining the Allies after years of maintaining a policy of neutrality.

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