Friedrich Kapp,
Immigration and the Commissioners of Emigration of the state of New York
(1870)
“ Thus we find that, in this respect also, moral as well as physical causes control emigration. The first are as powerful, if not more powerful than the latter. In the United States, both are at work in attracting emigrants, and hence why there is a larger European immigration to this country than to any other on the face of the globe. ”
