Original sentence: Subdivision was consists of 6 Upa-Zillas :.is the first Subdivision of Bangladesh
Edited sentence: At the eve of that replacement,Natore was decleared as a Subdivision; thats why Natore is the first Subdivision of Bangladesh.Natore Subdivision was consists of 6 Upa-Zillas :.Natore was the District HQ of Rajshahi since 1769-1825