West  Khasi  Hills,  presently    the   largest   district  of Meghalaya,  was carved  out of the erstwhile Khasi Hills District on the 28th October, 1976.   In  the  same   year,   on  10th November, the Mairang Civil Subdivision was inaugurated, whereas the Mawkyrwat Block was converted into an Administrative unit. With the   upgradation  of  Mawkyrwat  into a full-fledged   Sub-Division   on   June   26th   1982,   the  District now comprises of three Sub-Divisions (including the Sadar Sub-Division), one Administrative Unit viz., Mawshynrut which came into being on   the  9th  February,  1996  and 6 (six)     C & R D Blocks viz.,   Nongstoin, Mairang,  Mawkyrwat, Mawshynrut,  Ranikor      including       Mawthadraishan  Block    which was    created  vide  Govt.   Notification   NO.CDD.232/89/Pt/61, dt. 20^th March, 2001.