ISBN-13: 9780786433087 / Angielski / Twarda / 2011 / 585 str.
The largest period of migration to the United States occurred between 1870 and 1920. During that period, more Poles migrated to the United States than any other national group except Italians. Additional large-scale Polish migration occurred in the wake of World War II and during the period of Solidarity's rise to prominence. According to current estimates, at least nine million Americans trace their roots to Poland.