In nature , Bangladeshi Hinduism closely resembles the forms and customs of Hinduism practiced in the neighbouring Indian state of West Bengal , with which Bangladesh ( at one time known as East Bengal ) was united with that country until the Partition of India in 1947 . In nature , Bangladeshi Hinduism closely resembles the forms and customs of Hinduism practiced in the neighbouring Indian state of West Bengal , with which Bangladesh ( at one time known as East Bengal ) was united until the partition of India in 1947 .