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.
More examples. 1  The D-Day invasion was a concerted exercise by the armed forces of Britain, the US and Canada. 2  The ancient Britons inhabited these parts of England before the Roman invasion. 3  Thousands of troops have massed along the border in preparation for an invasion. 4  British troops spearheaded the invasion.