Here is my periodic system nonsense again: a European discovered silicon. America's not all that. Also, you seem to have a chicken and egg problem with your reasoning.
That wasn't your comment you said the nordic countries discovered more periodic elements the US. My response was going to be since your grouping the nordic countries the the uk and us would also have to be group because of historic relation between the uk and us specifically the us is some degree was a colony of the uk. With that being said the two combined have discovered 45 elements almost split evenly between the two in comparison to the nordics 25. Also its not a chicken and egg problem unix came to fruition without linux, but linux would never have existed without unix especially if Linus Torvalds had never came in contact with unix at university. Linus Torvalds thesis goes in detail about relation between the two.