You are welcome.
Eaton's book is about Agrarian expansion theory to explain the fact that a majority Muslim population somehow popped up in Bengal, far away from older Muslim population centers towards the Western part of South Asia.
While conversion of local
dalit/adivashi/fishermen as a result of agrarian expansion was the main factor behind the rise of majority Muslim population in Bengal, this however does not mean that significant migration did not take place. There are plenty of places Eaton mentions these migrant Muslims that settled down in Bengal, starting from soldiers and rulers in early towns from 1200 AD, down to sufi pirs and holymen in rural areas that helped lead the agrarian expansion efforts of clear cutting forests to create arable land, during Mughal rule around 1600-1700. Every time there was invasion by Delhi Sultanate or Mughal Army, migration took place. Even in 18th century Maratha invasions caused internal migration of South Asian Muslims from other areas to the Bengal sanctuary, @
eastwatch wrote about this phenomenon really well.
As for Ashraf, racism etc., I think we are trying to understand and reconstruct a more accurate picture of history, but some other people, who are not Bengal Muslims, happen to have some ideas of their own, that they would like to promote, about our history. That is where the problem lies. Bengal Muslims had much more local ancestors than foreign ones, there is no question about that, but we should be able to impartially recognize and celebrate all of our ancestors equally. We, Bengal Muslims, should not have to dump some of our ancestors, just because it makes some other people uncomfortable for whatever reason.
A people who do not know their own history and as a result has some gap in their knowledge, can easily be fed with some concocted pseudo history and thus make them subject to manipulation, brain-washing etc. Much of this went on after fall of Muslim rule in Bengal in 1757. So back in 1800, while all of South Asia's educated people (Muslims and Hindus) were fluent in speaking, reading and writing in Persian, the same people became fanatic about Urdu and Bangla in 1952, while both of these languages were products that were shaped in Fort William college in early 1800's so they could be made ready to ease the burden on English, when Persian was replaced with English as the official court language around 1830. If Muslim Bengali's were fully aware of what they have in common with Muslims of other parts of South Asia, would it be that easy to brainwash the public and engineer a civil war like the one that took place in 1971? These are the things I wonder about.