 At the same time, Blake recognizes that though America has freed itself from British rule, it continues to practice slavery.Blake used Plato's Allegory of the Cave in "Visions of the Daughters of Albion" as a theme for the three characters not being able to understand the true nature of reality, without being hindered by convention.It has been argued that Theotormon is a mythicised version of John Stedman, whose book about his experience of slavery and brutality in Suriname on the coast of South America was being illustrated by Blake at the time.