What was robert duncanson's stimuli for the painting "the land of the lotus eaters?

Robert Duncanson’s  painting “The Land of the Lotus Eaters” conveyed historical, literary subjects. It was inspired by Tennyson’s poem about the paradise that seduced Ulysses’ soldiers. But in the painting, white soldiers are resting on the banks of a river while being served by the dark-skinned Americans, that the south had grown dependent on slave labor reflecting criticism.

The linear perspective changed the quality of art because it gave art a sense of reality. it gave the illusion that the background and surroundings were actually close and/or far and a sense of depth. linear perspective change the quality of art following its birth the renaissance period as they want the art to be more realistic and they believe one way to achieve it is to use the method of linear perspective. it uses the principle of math to realistically portray space and depth in art.