There's a major difference between western and eastern Europe..?
It is a large continent, and there are lots of small countries in it which can be extremely different from one another in terms of culture, economies and government.
You also get the countries that are pretty much squeezing in to other continents.
Russia spreads all the way from West Europe, across the East and all the way through Asia.
And then you have all the countries near Greece, which just squeeze in before Asia Minor and the Middle East.
Europe's a big place! Russia is pretty much in europe.
Also you should have put Australasia or something because new Zealand doesn't have an option.
Apparantly the better term is "Oceania".
Australasia just encompasses Australia and New Zealand, New Guinea and a few smaller islands.
Oceania is the term for the continent, which includes Micronesia, Melanesia and Polynesia alongside Australasia.
But, that's just one definition.
It's not at all agreed upon on what those areas in the Pacific really belong to.