What location and time period are you talking about? Because yes there were slaves of all sorts, but "slaves" meant a different thing to various cultures. For example, Roman slaves were more the modern example of "servant" instead of "slave". And "servant" was more like "chief butler" in how they were treated.
Just to clear it up, slavery WAS one of the main reason the states wanted to secede. There was a "secession convention" where reasons to secede were discussed and one (noted of many) were non-slave holding states increased hostility towards the practice of slavery and the failure of non-slave holding states to follow constitutional laws such as returning runaway slaves etc. So, slavery wasn't necessarily the reason for the civil war, however, it was a strong reason why the south seceded and their secession was the main reason why a civil war came about.
Everyone - the civil war was NOT about ending slavery. The south did not want to unionize because they wanted to continue governing themselves. Lincoln knew that the south could not sustain the war without the manpower of their slaves. Ending slavery was simply brilliant war strategy. That being said, Lincoln did not agree with slavery. But also did not believe blacks and whites could/should live together. He had someone in his administration to see if any a place, including any islands, could be found to send the newly freed black slaves to. Its a good idea to read his own words on these topics instead of what others teach/tell you..
True. “.....to be expended under the direction of the President of the United States, to aid in the colonization and settlement of such free persons of African descent now residing in said District, including those to be liberated by this act, as may desire to emigrate to the Republic of Haiti or Liberia, or such other country beyond the limits of the United States as the President may determine.” Basically means, You're free but go find somewhere else to live.
Or, I dunno, maybe it's just us.
Kind of unlikely, though.