I didn't see an article with the second title in the archive. There's one just titled ".../World economic effects", but it has no content at all.
Did it use to have content? Or did that entry just hit the ether and disappear?
Deleting an article puts all its old versions in the archive; I see no evidence that this article ever had any content, so it may be that it was created under UseMod and the old versions, if any, are gone; or else it was created as a placeholder for future use and never filled in.