Webs of the Endangerment
The Empire of the Witch Queen seems to exist sometime around the Age of Enlightenment.
Presumably, the reign of the witching princess will usher in the Industrial Revolution.
Since the witching princess is currently ‘Yuba, however, that transition may be a rocky one.
Currently, the empire allows (and even encourages) the enslavement of magical creatures, such as Fairy Beasts and ghosts.