Chinua Achebe was a Nigerian novelist. He had a title of chieftain of Igbo tribe and wrote novels about its customs. That was portrayed as sophisticated, passed down through generations.
Westerners may mistaken them as ‘primitive and savage’. But Achebe showed Igbo people's rich cultural background through his narrations. Igbo proverbs, ‘the art of conversation", were frequently quoted in his novels.
The non-violent nature of Igbo was demonstrated by events like the peaceful agreement with the Mbaino tribe during a murder in Igbo by a Mbaino man.
Answer:
The Namesake has reflected history because it examines and explores the cultural aspect and differences of the past, which can be compared to the present. Literature affects history because it can often record and/or explain the past, and could ultimately change and influence other's perspectives of history.
It reveals why Jekyll looked so sad and would not join the men.