This will give you peace of mind, in that you can verify whether or not a professor has submitted a letter. It also gives you a polite way to ask a follow-up: I see that you haven't checked off the spreadsheet for X and it's due in three days.
Of the nearly 200 countries out there, the Brits have invaded all but 22. That is just about 90% of all countries! Mongolia, the Ivory Coast, Bolivia and Sweden are among the selective group of making it to 2013 without a British invasion. Here is the map showing where (pink) the British have invaded.
British have invaded nine out of ten countries - so look out Luxembourg. Britain has invaded all but 22 countries in the world in its long and colourful history, new research has found. 21 of the 22 countries that have not been invaded by Britain. By Jasper Copping. 9:30AM GMT 04 Nov 2012.