#21October #October21st #21अक्टूबर
#police #nationalpoliceday
#national_police_day
#nationalcommemorationday
#national_commemoration_day...
#in1789 #thomasalvaedition
#thomas_alva_edition #thomasedition #americaninventor
#invent #firstelectricbulb...
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● 21 October : National Police Day ( also called as Policen Commemoration Day. )
● 21 October : Thomas Alva Edition made the first electric bulb in 1879.
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Any doubt..Please comment...
& Thanks for reading... #2cstudybysj #2cstudy #crystalclearstudy #crystalclear...
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