An emerging country is when 2 or more country's are bunched into each other otherwise they are emerging. Hope this helps :).
The a at the beginning of the word
The statement above is detailed information since even though we can infer who John Lewis is (American politician), the fact that he was a member of the Atlanta City Council is not information that is known or supposed to be known by all. General information refers to a statement that everybody knows. For example, if we say “Brad Pitt is an American actor” this is general knowledge as he is an international figure known by most people around the world.