Lincoln issuing the Emancipation Proclamation without any plan to repatriate the slaves to their native habitat.
That, and the election(s) of King-for-Life Franklin Deleanor [sic] Roosevelt.
“Lincoln issuing the Emancipation Proclamation without any plan to repatriate the slaves to their native habitat.”
By 1861, every slave in America was native to America with most having ancestors in America since before the American Revolution.
Therefore, their “”native habitat” was the United States.
They didn’t have a “native habitat”. They were all US born at that point.