If Abraham Lincoln allowed the South to secede instead of fighting the civil war, and the USA and CSA continued to trade and coexist, how do you think the last 150 years would have played out?

by UnicornOnTheCobb
Reedstilt

This is sort of alternate history question is too speculative for a suitable answer from AskHistorians. You may want to ask over at /r/historywhatif though.