All countries are unique, but I suppose that you could argue that North Korea and South Korea do share part of their names, so would be among the few that would have a lesser degree of uniqueness.
Languages aren't divided up by country, they appear in different areas of the world. That's how South America has a total of two major languages (Spanish and Portuguese, although English, French,...
The Spanish language developed over a long period from Latin (Spain was a part of the Roman empire for about 600 years). Following the fall of the Roman empire, the Visigoths that controlled the...