Final answer:
The best-known African novel of the 20th century is Chinua Achebe's 'Things Fall Apart', which discusses the impact of British colonialism on Igbo society, portraying themes of identity, culture, and resistance.
Step-by-step explanation:
The novel Things Fall Apart by Chinua Achebe is widely regarded as the best-known African novel of the 20th century. This seminal work explores the impact of British colonialism in Nigeria and the effects on the indigenous Igbo society. Achebe's narrative not only highlights the clash between traditional African culture and the imposition of European values but also underscores the importance of viewing history through indigenous perspectives. Things Fall Apart has achieved global recognition, resonating with readers around the world who have experienced the lasting consequences of colonization. This novel's significance extends beyond its immediate context, as it speaks to universal themes of cultural identity, resistance, and the struggle to maintain one's heritage in the face of change.