Book excerpt: "Post-World War II mass migration to Great Britain altered its demographic composition more markedly than in any other period in its history, resulting in a modern multicultural nation state shaped by the ethnic diversity of its citizenry. Populations from African, Caribbean, and South Asian locations arriving in Britain post-war brought diasporic sensibilities and literary heritages that have profoundly transformed British national culture, leading to a more complex and inclusive sense of its past. The Companion to British Black and Asian Literature (1945-2010) examines the creative impact of this rich infusion upon English literature against the backdrop of the seismic social and economic changes triggered by colonialism and migration, multiculturalism, and contemporary globalization"--