Final answer:
The Northern States did not outlaw slavery in 1819, but some adopted gradual emancipation laws.
Step-by-step explanation:
The subject of this question is History. In 1819, the Northern States had not outlawed slavery. However, it is true that some Northern states, such as Ohio, Illinois, and Indiana, did adopt gradual emancipation laws in the early 1800s, which meant that enslaved individuals would be freed over time. This led to some Southerners who had moved to these states having to give up their slaves or return to the South.
Learn more about Slavery in the Northern States