Complex sentence: The language was standardised by American Missionaries according to that of the Sibsagar (Xiwoxagor) District, the nerve centre of the Ahom politico-economic system while a renewed Sanskritisation was increasingly adopted for developing Assamese language and grammar.
Split into simpler sentences: The language was standardised by the American Missionaries with the form available in the Sibsagar (Xiwoxagor) District (the nerve centre of the Ahom politico-economic system). A renewed Sanskritisation was increasingly adopted for developing Assamese language and grammar.