American wheat, sold in Europe at lower prices than the domestic product, brought on a crisis in European peasant agriculture, sending a migrant stream of ruined peasants to seek new sources of livelihood in the burgeoning Americas. Ironically many of them made the journey westward on the same ships that carried to Europe the wheat that proved their undoing.

Chapter 11, The Movement of Commodities, p. 319. - Europe and the People Without History