Final answer:
Uchendu provides evidence that Okonkwo is not the 'greatest sufferer in the world' by sharing his own experiences and emphasizing the importance of endurance and resilience.
Step-by-step explanation:
Uchendu, a character in the novel 'Things Fall Apart' by Chinua Achebe, provides evidence that Okonkwo is not the 'greatest sufferer in the world' by sharing his personal experiences. Uchendu explains that he has also faced great suffering, such as losing his entire family, but he does not wallow in self-pity like Okonkwo. Uchendu highlights the importance of endurance and resilience in the face of hardship, suggesting that Okonkwo's suffering is not unique.