Is there a connection between slave density and which slave states seceded?

In some african american communities, unemployment was as high as percent.

In ohio in 1872, the cleveland massacre was a violent labor dispute at standard oil refineries in cleveland. a takeover by standard oil of the refineries in cleveland. an attempt to stop standard oil from becoming a monopoly. a failed attempt by standard oil to take over other refineries.

Causes and effect chart for industrial revolution