“Like ancient Alexandria, Cairo at its height, and Venice in the fifteenth century, Amsterdam owed much of its commercial success to the presence of a vast diversity of people. The combination of economic vitality and a diverse population create a climate ideal for bold new innovations in art, technology, and philosophy.”
(The City: A Global History, Joel Kotkin, pg. 79)
This passage comes from a section of the book that discusses Amsterdam’s rise as a global city in the late sixteenth and early seventeenth century. The quote ties diversity into economic and civic prosperity. Miami, as you may know, has the highest percentage of foreign-born residents in the world.