Many people believe that the collapse of the Indus Valley Civilization was caused by climate change.
If you're referring to the Civil War era, in the years leading up to the war, once such compromise could have been that slavery could continue to exist where it was, but not spread to other states.
Many original settlers in the Carolinas came from Barbados. It was in 1670 that Albemarle Point was established in South Carolina. Most of the settlers came from the Carribean island of Barbados.
This is true. He supported ideas of taking political action instead of rising in rebellion. He believed that African-Americans should have their own peace of land where they could live freely and not suffer from harassment. He also supported the idea of not buying anything that was made by slaves which was also a political action.