Abbreviation for quod erat demonstrandum (Latin which was to be proved), added at the end of a geometry proof, but also sometimes used in speech and writing.
The school child spoof translation is Quite Easily Done.
The crescent is a symbol of Islam and the green also denotes Islam. The four stars and the four stripes of colour represent the four islands in the group (including Mayotte, which is a French dependency). Effective date: 2002.