Reason for the political, social and religious decline of Vedic Hinduism in Bengal (medieval via colonial to the post-partition era)
The solidest reason for the fall of Vedāntic Hinduism (not the Hinduism allowing flesh consumption and all sorts of andha-tāmasika worships in the mode of ignorance) in areas of Bhārata like Bengal (Both West Bengal state of India and the country of Bangladesh combined comprises 250 million human population — Indeed, the unification of Kolkata/Calcutta and Dacca/Dhaka forms one of the highest population density areas in the world + Bengali/Bangla language being the 7th most spoken language in the world today with about 189 million native speakers — this includes Bengali natives inhabiting in states like Assam, Odisha and Notheastern states of India. About 40% Hindu and 60% Muslim demographics in the total area of Bengal spread in two countries viz. Bhārata and Bangladesh) has remained the factor of ‘Bengali brotherhood’ – a notion which surpasses and supersedes all caste-related and religion-related barriers. Due to this reason, generally, liberal Hindu mindset – when transforms into a Bengali Hindu mindset, it overlooks the caste and religious barriers and gives emphasis to the ‘Bengali’ factor over all other factors. This is, more or less, same for the Bengali Muslims, too.
In 1971, the Bengali Muslim majority country of East Pakistan (formerly, known as East Bengal and later known as People’s Republic of Bangladesh) chose to overthrow the common ‘Islamic/Muslim’ religion based factor that it shared with its West Pakistani counterpart (today’s Islamic Republic of Pakistan) and, rather, emphasized its common ‘Bengali’ factor on top of all other factors and thus, chose to pair up with India which contained another small portion from the overall undivided Bengal province of the colonial/imperialistic British Raj.
Moreover, after the medieval times were over, in past 3 and half centuries, Bengali Hindu community has side-lined the caste factors (of the four Vedic classes/varṇas) and even the religion based segregation and on the name of Bengali brotherhood, the Bangla status has proved to be more integrally vital to a typical Bengali (whether a Muslim or a Hindi and whether a resident of West Bengal state of India or of the country called Bangladesh).
For this reason, any sort of pro-Islamic political and social groups/parties have so far been unsuccessful in gaining momentum in the Muslim majority Bangladesh. And the same applies to the Hindu majority Indian state of West Bengal, as well, where, after the political Independence and partition of India in 1947, no fundamentalist/right-wing Hindu socialist or religious group has been able to influence the mass at large. Rather, secularist political parties and the left-wing socialist atheistic communist parties were preferred choices of governments.
In short, in the Indian state of West Bengal, at present. the ‘Hindu’ feeling of pride is almost nil and negligible and paralysed by the provincial Bengali factor. Such are the reasons why the Vedic culture saw its downfall in Bengal despite the ironical fact of Bengali Muslim women wearing sarees and not the garments of the Arabian culture.
Moreover, in Mahābhārata, a certain passage describes how the Pāṇḍavas headed by Yudhīṣṭhira did not want to cross further interior into those parts of Bengal which laid on the eastern side of the Ganges – considering it to be a sinful place. For all such reasons, a strong pro-Vedic environment could not be, rationally, expected in Bengal as how it had a solid grip on the dākṣiṇātya or the dakṣināpatha i.e. Southern India and even in other parts of Northern India or uttarāpatha/audīcya.
Due to this, Bengal and the adjacent Northeastern Bhārata became the strongholds of all sorts of deviant non-Vedic and sinful tāntrika practices along with a general spread of flesh consumption incorporated into the daily lifestyle of even a typical Bengali Hindu. Even in such a detrimental scenario, the pro-bhakti, pro-Vedic and pro-Vaiṣṇava influence spread by the apostles of Caitanyadeva through the propagation of Bengal Vaiṣṇavism / Gauḍīya Vaiṣṇavism remains to be saluted and not criticized for whatsoever reason speculated.
— – Bhakti-rasa-vedānta-pīthādhīśvara Rāmakṛṣṇa Svāmī Gurupādācārya (Anand, Gujarat, Bhārata & City of Modesto, Stanislaus County, Northern California, USA)
(URL to the above full essay — https://wordpress.com/post/brvf.org/2975)