Common themes in west African literature referring to things fall apart, so long a letter and the beautiful ones are not yet born ?

1. Colonialism and its impact on traditional African societies: All three works explore the effects of colonialism on African societies and the struggle to maintain cultural identity in the face of outside influence.

2. Gender roles and relationships: "So Long a Letter" and "Things Fall Apart" both address the role of women in traditional African societies and the challenges they face in a patriarchal society. "The Beautiful Ones Are Not Yet Born" also touches on gender dynamics and the struggles of women in post-colonial Ghana.

3. Corruption and moral decay: "The Beautiful Ones Are Not Yet Born" specifically focuses on the theme of corruption and moral decay in post-colonial Ghana, highlighting the challenges faced by individuals trying to maintain their integrity in a corrupt society.

4. Tradition vs. modernity: All three works grapple with the tension between traditional African values and the pressures of modernity, as characters navigate changing social norms and cultural expectations.

5. The search for identity: Characters in all three works struggle to define their own identities in the face of societal expectations and external pressures, highlighting the complexities of personal and cultural identity in a rapidly changing world.