Politically, Europe has close ties to countries such as Canada, the United States, Australia, and New Zealand mainly because they were previous European countries' colonies. NATO is such an example of this politcal union. Its members include Canada, the US, and 26 European nations. Europe is also economically tied to these four nations, as well as socially tied (as many of these countries' immigrants are from Europe and vice versa, similar living conditions).
Africa and Europe do not join.
It has been in Europe since its genesis.
The Atlantic Ocean "joins" America and Europe.
Asia.
There is a small part of Turkey that is in Europe, but most of Turkey is in Asia. It is true that Turkey wishes to join the EU.
A continent cannot choose to physically join with another continent.
Primarily, because they are not in Europe.
People in the US felt that Europe was Europe's problem.
Why? Well, they didn't have a choice. Norway is located at the European continent and hence, they are a part of Europe.
Yes, they can join special ops, but not as full-time employees with benefits and retirement plans.
Be part of Europe and swear allegiance to it.
It would depend on the regulations of the club