No, Southereners did.
Jim Crow was never law in the North, nor was segregation and most impedments to civil rights.
But let's go by your revisionist slant and see what we turn up:
1865
1965
2015
2018
Yes, we have come a long way, correct on that front.
One century.
Half a century.
It's been a mere 3 years after the 50 mark, shall we hold hands and wait 47 for 100 to make it official?
Welcome to what Northerners and Southerners call progress, albiet much to the consternation of the latter
AKA present day Republicans.