I'm pretty sure the Scandinavia consist of Denmark, Sweden and Norway. And the Nordic countries are Denmark, Sweden, Norway, Finland and Iceland. But I'm not 100% sure :-)
I'd say "Leif" would be a better answer than "Erikson" when searching for Leif Ericson. I had tried all kinds of things (Leif, Leifur, Leif the Lucky, Leif Eriksson...) before going for Erikson and getting it.
Thanks for an interesting quiz.