Slaves in past cultures! (art representing past cultures, mostly Eastern)
Modern Consensual Slaves
Remember that slaves are owned human property just as they always were. Under law they can leave at any time, the chains are symbolic. The real chains are the slave's need to be controlled. This control is frequently demonstrated with physical discipline but modern slavery is not about BDSM which really is another subject altogether - often connected but actually different.
Some Masters require their slave to offer Him the instrument of punishment.
Many slaves carry their Master's tattoo - a modern form of branding.
The Nadu position is the ultimate submissive pose, beautiful to any Master.
An extension of Nadu - Nadu Present - in which the slave offers herself wide open for Master's inspection or use.
Tower
Some Masters use corporal punishment. The humiliation and control deepens the slavery
Many Masters like their slaves to be naked at all times around the house - but its not always practical.
Some slaves have to eat off the floor to reinforce their submission.