The document discusses themes of imperialism in Joseph Conrad's novella Heart of Darkness. It explores how the novella depicts Europeans asserting their racial superiority and civilizing mission as justification for colonizing Africa. However, Marlow comes to realize that imperialism in the Congo involved brutal exploitation and abuse of power over native people. Ivory is presented as a symbol of the Europeans' greedy commercial motivations for imperialism. While the idea of uplifting natives was used to justify colonization, many Europeans instead treated natives as less than human and failed to civilize them.