This Quiz is based on U.S. States or European Country by GDP
Sources:
https://en.wikipedia.org/wiki/Economy_of_the_European_Union
https://en.wikipedia.org/wiki/List_of_German_states_by_GRP
Interesting to see that tiny Hamburg has a bigger economy than Romania which is about 300 times its size. The quiz needs to be updated since Brexit however, the UK have given up their No. 1 spot ;-)
Embarrassing, I apoligize. Hope it wasnt to inconvenient.