Original sentence: And Bangladesh split from Pakistan in 1971.Collingham (2006) elaborates :.Food on the Indian subcontinent does not divide into different culinary styles and dishes along these relatively new national boundaries so much as along much older regional boundaries.However, for much of the period that this book covers, Bangladesh, like Pakistan and Sri Lanka, belonged to a broader food world that can be termed Indian.It was not until 1947 that Pakistan became a nation.Punjabis share a food culture although their region was split in two with the creation of Pakistan.Sri Lanka followed in 1948.The critics pointed out a number of reasons to the contrary, including the allegation that the dish was not an "authentic Indian" one, as it was being prepared by the chefs from Bangladesh.The food of Bangladesh belongs to the culinary world of Bengal.The majority of Indian restaurant owners in Britain, and most of the proprietors of New York’s East 6th Street establishments, do indeed come from Bangladesh.The question of the dish's origins sparked a heated debate when the then foreign minister of the UK, Robin Cook, announced it as the new British national Dish.These are just two of the many culinary regions on the Indian subcontinent
Edited sentence: Chicken Tikka Masala has achieved iconic status in the UK and was acclaimed by a government minister as 'Britain's true national dish'