enables slave trade
any non African culture can take this tradition
kidnap all wandering African to work at your field, some may have BBC
gain massive monthly gold income based on slave stats.
new GUI like court view, you can assign slaves to work at various field, earning you gold.
you can sell slave for a decent amount of gold
court position for capturing and finding slave.
a random event where you can decide whether to enslave or not
maybe make girls randomly getting black curiosity trait periodically? when you have an African slave.
research on if barony can have courtier. if yes then appoint one guy as the slave leader and assign slave to him, and we can have a slave uprising from time to time. a scenario in which the pent up desire of African men got unleased to the courts women.
research on adding HUD GUI slave population