Yep, in the wrong forum.
The idea of a 'Negro' reservation or territory was brought up, but gained no traction. The core problem is the former slaves were still wanted, as slaves. The large landowners of the south, and other businessmen wanted cheap labor, as cheap as possible. Losing 15 or 20% of your population to a abrupt emigration does not keep labor cheap. If too many of the former slaves disappear west, then who knows the Rednecks might realize their labor is worth somethig too.
Keeping labor cheap was at the core of the race politics, its why there were attempts to discourage migration west, or north.