How are the characters other than Marlow and Kurtz used as metaphors in Heart of Darkness?

How are the characters other than Marlow and Kurtz used as metaphors in Heart of Darkness?

How are the characters other than Marlow and Kurtz used as metaphors in Heart of Darkness?

How are the characters other than Marlow and Kurtz used as metaphors in Heart of Darkness?

How are the characters other than Marlow and Kurtz used as metaphors in Heart of Darkness?