Heart of Darkness was inspired by Joseph Conrad's 1890 journey into the Congo, which he found a "vile scramble for loot" that disfigured human conscience. Originally published as a magazine serial in 1899 and as a book in 1902, it deals with issues of colonialism, racism, and class arising from Belgium's brutal rule in the Congo, which led to millions of African deaths. The story reflects Conrad's likely traumatic experiences witnessing the exploitation and horrors of the time.