There are many countries that participate.
It's a lot to list so if you go to Maps of World 2016 Summer Olympics Participating Countries, you can see all recent countries that participated. This way you can also give credit to that site.
Exploration of the new world was encouraged by a desire for direct trade routes by sea.
Hope this helps.
Answer:
Technology is very needed in cold war. For example spy plane and nuclear.If nuclear doesn't exist, maybe the cuba would be invaded by the USA, and if spy tech doesn't exist, maybe the cold war would be a full blown war, between Nato and Warsaw Pact in Europe (WW3)
I believe that would be To _interpret___________ means to explain the meaning of, or to clarify the definition of.