USA germany russia
Cars financial services oil and gas commodities.
Lol! It's hilarious to see your knowledge about the world. Usually a school kid says such things because they have no idea about this world and the countries. Read more and research harder before exposing your stupidity in front of the crowd. Forgiving you this time for not considering the other countries and their contributions. Next time, the forum members are going to be so forgiving. Really hilarious!