Most of the one and one-half million Poles who immigrated to the United States before World War II were people of rural, Catholic, Slavic stock in search of greater economic and social opportunities. They settled in urban centers primarily in the middle Atlantic, mid-Western, and New England states where they formed communities (Polonias) around the steel mills, coal and iron mines, slaughter houses and meat packing plants, oil refineries, shoe and textile factories, granaries and milling plants. Their labor was an important element in the industrialization of America. They were among the millions of unknown persons from eastern and southern Europe, as Michael Novak put it, “who have strengthened family and neighborhood life in America, and from 1930's to the present have made possible the longest strides in the nation's history in economic matters and civil rights.” Very few scholars and intellectuals, however, could be found among these Polish immigrants. When Polish scholars, intellectuals, or artists emigrated from partitioned Poland, usually after unsuccessful revolutions, they settled in France or some other European country.