There is lot of misspellings here. Please correct those. Example: Dominica, Dominican republic, Curacao, Antigua and Barbuda, Liechtenstein, Egypt, Papua New Guinea etc. You should probably accept Congo for both Congos or at least accept Democratic Republic of Congo or. This will be nice quiz after you have made it correct.
You have "Papau New Guinea" and need to change it to Papua. Also, if you're alphabetizing according to standard English names, you have some issues in Europe especially