Q:

Which one is more correct and natural: "the country of Canada", "the country Canada", or "Canada country"?

Which one is more correct and natural: the country of Canada, the country Canada, or Canada country? For example: 

We will learn a lot about the country of Canada in the next lesson.
We will learn a lot about the country Canada in the next lesson.
We will learn a lot about Canada country in the next lesson.

A:

I think "the country of Canada" is the most natural. "The country Canada" is possible too, but less natural. "Canada country" sounds wrong. 
 Even more natural would be simply "We will learn a lot about Canada in the next lesson.", unless the group doesn't already know that Canada is a country.

