The final instalment in the Amazing Immigrants series, this volume examines patterns in migration over the course of history. From the thousands of Irish families that relocated to the north-eastern United States, to mass migration from India and Pakistan to the United Kingdom, this book explores the myriad ways in which these diasporas have improved and enriched the culture and society of the countries these migrants chose to call home. Building upon the insights revealed in the first three instalments of the series, Amazing Immigrants, Volume IV delves deep into the nature of demography and celebrates the innumerable ways in which mass migration has facilitated the betterment of civilisation.