Answer:
a movement to abolish the enslavement of African Americans
Explanation:
In the 17th and 18th century, several people were kidnapped from Africa, and they were taken to the American colonies and forced to become slaves. These people worked as servants and were involved in crops production for the whites. However, Frederick Douglass displayed a powerful capacity to stir both readers of his printed work and audiences in lecture halls in the service of a movement to abolish the enslavement of African Americans.
 
        
             
        
        
        
It means exactly what it says...to write about what you know. If you know about something than you'll have more to say and have an opinion. If you don't know about a subject...there's less to say.
        
             
        
        
        
Answer:
I dont know 100%, correct me if I am wrong. 
But I think it is C. 
Hope I help
 
        
                    
             
        
        
        
The Answer would be D.
IT is discribing his wings as being frightening, when they are only wings.