No, it isn't. You may not like it, but the existence of slavery was accepted by the founders and they made a bargain with the Slave States (which were most of them at the time) to keep it.
Immoral or not, the Union made great sums of money off of slavery, and they were willing to continue it so long as that money kept coming in. They only threw a fit when that slave money was interrupted.
You don't want to admit it, but the Union went to war with Independence, not slavery. They liked their exploitation of slavery just fine. It was making them wealthy.
Enough so that they inscribed the practice into their pretend constitution in perpetuity.
Hypocrite! So did the Union Constitution!
No Person held to Service or Labour in one State, under the Laws thereof, escaping into another, shall, in Consequence of any Law or Regulation therein, be discharged from such Service or Labour, but shall be delivered up on Claim of the Party to whom such Service or Labour may be due.
Again, the flag of Slavery for "Four Score and Seven Years" was this flag.
It mattered not what advances in technology, culture, or government may come - they were going to have their ni**ers and they were hell-bent to murder anyone who got in their way.
An amusing claim when the only thing necessary to prevent oneself from getting murdered was staying in your own town and not invading other people's homeland.
You keep forgetting, it is the Union who sent men to die so that the slave money could once more be restored to the Wealthy Elite of New England. (who could be excused from participating in this crusade by the payment of $300.00)