1. how are countries in the european union linked?
check all that apply.
they share a military.
they have an official shared language.
more share a common currency.
they allow people to move easily between the countries.
2. why is it difficult to determine which countries belong to europe and which belong to southwest asia?
the european union allows almost any country to join.
most countries want to be associated with southwest asia.
there is no natural physical boundary between europe and southwe

First question:

They share a military. - there is talk about it, but not yet
They have an official shared language.- not at all, all the languages of the EU are official in it
More share a common currency. well, yes and no. (i think they question wants you to answer "no", but it's more that there isn't a good answer) - SOME of the EU countries have the same currency
They allow people to move easily between the countries' - definitely true!!!

Second question
- the EU is actually very strict as for who joins and anyway, the EU is not the same as Europe. And no, it's not true that most countries want to be associated with Asia. The correct answer is that There is no natural physical boundary between Europe and Southwest Asia