Immigrant entrepreneurship rose dramatically in the last decade of the twentieth century and has had a huge impact on urban life. Through a comparative study of international "advanced economies," this book explores the impact of immigrant business, drawing on in-depth case studies from Austria, Belgium, France, Germany, Italy, the Netherlands, the United Kingdom, Australia, Canada, the United States and South Africa. How important is the institutional framework of each country in determining the extent and incidence of immigrant entrepreneurship? What role do welfare systems play in immigration and how do they compare and contrast in different countries? In what ways do immigrants use their own resources, make use of existing ones, and create new ones? Paying specific attention to the particularities of each country, it provides an up-to-date review of theoretical debates that have developed rapidly in recent years.