Assamese literature its roots in the Eastern dialect. The modern Assamese period began with the publication of the Bible in Assamese prose by the American Baptist missionaries in 1819. The currently prevalent standard Asamiya has its roots in the Sibsagar dialect of Eastern Assam. As mentioned in Bani Kanta Kakati's "Assamese, its Formation and Development" (1941, Published by Sree Khagendra Narayan Dutta Baruah, LBS Publications, G.N. Bordoloi Road, Gauhati-1, Assam, India) – " The Missionaries made Sibsagar in Eastern Assam the centre of their activities and used the dialect of Sibsagar for their literary purposes". The American Baptist Missionaries were the first
Assamese alphabet consonants and the row of sibilants"), depending on the standard spelling of the particular word. Assamese or Asamiya consonant clusters include thirty three pure consonant letters in Assamese alphabet and each letter represents a single sound with an inherent vowel, the short vowel /a /. The first twenty-five consonants letters are called ‘sporxo borno’. These ‘sporxo bornos’ are again divided into five ‘borgos’. Therefore, these twenty-five letters are also called ‘borgio borno’. The Assamese consonants are typically just the consonant's main pronunciation plus the inherent vowel o. The inherent vowel is assumed and not written, thus, names of most letters