How did ‘Lift Every Voice and Sing’ become known as the Black national anthem_

How did ‘Lift Every Voice and Sing’ become known as the Black national anthem_
How did ‘Lift Every Voice and Sing’ become known as the Black national anthem_
How did ‘Lift Every Voice and Sing’ become known as the Black national anthem_
How did ‘Lift Every Voice and Sing’ become known as the Black national anthem_

How did ‘Lift Every Voice and Sing become known as the Black national anthem_