What are the causes and effects of Obi's downfall in the novel?

The protagonist of the novel, Obi is a young Nigerian man who is given a scholarship to study in London. His acceptance of a bribe constitutes the main conflict of the story. Obi is prideful, ambivalent about his culture, naïve, and selfish. He is not self-reflective and finds it difficult to take control of his life.

Changing studies also contributed to his downfall.