Answer:
Make difficult decisions.
Step-by-step explanation:
Hannah Johnson is the author of a letter known as "Mother of a Northern Black Soldier to the President."
The excerpt from the letter that is missing in this question is the following:
"You must put the rebels to work in State prisons to making shoes and things, if they sell our colored soldiers, till they let them all go. And give their wounded the same treatment. It would seem cruel, but there is no other way, and a just man must do hard things sometimes, that show him to be a great man."
In this passage. Johnson talks about her experiences of the war, as well as those of her son. She is writing to Lincoln to let him know what her perspective on the war is. Johnson believes that slavery is unfair, and that the South should be pushed to give it up. She argues this can be done by forcing the Southern rebels to work as prisoners until they accept abolition. She argues that this is a difficult decision, but that great men often need to make such choices.