What are the differences of country and rock'n' roll?

One is plural and the other is not. The word in its singular form is "country" as in "Angola is a country." If there are more than one, then it is "countries" as in "Angola and Kuwait are...

No one country means that it can't be traced back to just that country, and no country means that definately no countries have.I hope this helps you. (Thumbs up) :)

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england

there is n difference