Karl Marx & Friedrich Engels

"Such countries have no other natural premises than the individuals, who settled there and were led to do so because the forms of intercourse of the old countries did not correspond to their wants. Thus they begin with the most advanced individuals of the old countries, and therefore with the correspondingly most advanced form of intercourse, before this form of intercourse has been able to establish itself in the old countries." I am having difficulty understanding the message the author is trying to send the reader.