A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data
That doesn't seem to be the problem, unfortunately. I've double checked the spelling, capitalization, and spacing of all of the country names, and all are correct. That also wouldn't explain why maps that previously displayed correctly with the same data inputs several years ago now no longer work. I've seen this issue widely reported on this site and others, so looks like it is some technical issue.