The upper southern states were the first to start freeing slaves. The northern states were already free states and didn't need to free any slaves.
The freeing of slaves is known as freedman. This was back in history.
Abraham Lincoln was credited with freeing the slaves and stopping slavery of people.
Manumission is the act of a slave owner freeing their slaves.
Manumission
freeing the slaves
freeing the slaves
freeing the slaves
freeing the slaves
Manumission or emancipation
Freeing southern slaves
emancipation
President Lincoln favored saving the Union over freeing the slaves.