The Bottom Billion, written by Paul Collier, focuses on the challenges faced by the world's poorest countries and offers insights into the causes of their economic and political struggles. Collier examines the factors that trap these countries in poverty, such as civil wars, corruption, and resource curses. He proposes practical solutions and policy recommendations to address the unique challenges faced by the bottom billion. The book provides a thought-provoking analysis of the relationship between poverty, conflict, and development.