You want to think of these essays as mini-papers. You want to build an argument with a thesis and evidence. This is not just an opinion paper.
If you have more than one citation without an author that uses your country's name, you'll need to add something more to your in-text citations to designate which source you're using. Use something unique to the publication to identify them, for example publisher. You'll put that in [ ] inside the parentheses in your in-text citation.
Example: ("Oman" [World Factbook])