Not only identified, knew their rights.
Lincoln's invasion was about power, money, and federal control.
What led to war was Lincoln’s denial of the right of secession. The federal government was not self-constituted, it was constituted by the States and they created it to be their agent, not their lord and master to order them around. As far as slavery goes, it was sanctioned in the Constitution and is referred to no less than four times.
Why was it necessary to kill people over an institution that is codified in the Constitution?