The conditions barely changed for the better. Child labor got somewhat better but not by a lot. 
        
             
        
        
        
Because the US needed to honor its vow to defend Russia
        
             
        
        
        
Social Darwinism is a term for the collective ideas or
policies that emerged during the 19th century. During 19th
century, European countries were expanding their empire. This lead to the
colonization of Asia and Africa. Racism has been rampant at that time. 
 
        
             
        
        
        
Hitler was raised thinking and learning that only whites deserved to be alive, it's like we have the same beliefs as are parents. His army was the same way. He only taught what he knew, which is sad.