I could be wrong, but i believe it was September 3, 1783. Hope this was helpful! :)
Well, lets see, Abu was the one elected, however there was a dispute because some believed that Ali should have been chosen. All in all though, they accepted Abu as their leader.
Answers: Was to preserve the Union rather than concentrate on the issue of slavery. Lincoln was prepared to take any actions to save the Union regardless of the slaves being held and laboring in the South.
Hope it helps.
