Submitted
This challenge doesn't completed yet, there are bugs i know, going to fix later. Here is some main bugs/lacks of app: -You can't refresh on country detail page. Page crashes, you have to go main page and refresh again to continue. It's probably about react-router. Edit: All problems fixed.
Addition to challenge, i'm gonna add 'sort by' section to sort countries with their populations and names (A-Z)./edit: sort section and pagination added. but couldn't solve that main bug above.