Now the Missionary, Apostle, Inquisitor, Archaeologist and Medic become Slaves when captured.
The Slave now stays a Slave when captured.
Two new policies: Forced Labor adds 30% production towards Slaves.
Indentured Servitude adds 30% production towards Slaves and newly trained Slaves gain 2 extra build actions.
Serfdom now adds 2 extra build actions to Slaves in addition to Builders.