Immigration, since it affects wages and standards of living, is essentially one of the aspects of the labor problem. Since the organization of our government in 1789 approximately thirty million foreigners have come to the United States. Practically every adult member of this vast army became a wage-earner as soon as he arrived, competing directly or indirectly with the wage-earners who were already here. Until a generation ago most of the immigrants came from northwestern Europe, chiefly from Great Britain, Ireland, Germany, and the Scandinavian countries. Just as this flow of human life to the new world slackened, another from southern and central Europe began, and continued with increasing volume until the outbreak of the Great War. This we call the "newer immigration." Its chief source was southern Italy, Greece, Austria-Hungary, and Russia.
Foreign Immigration into the United States: 1890 - 1918.