Original sentence: In some countries and regions such as Iran, Iraq, Lebanon, Azerbijan, Bahrain, Trinidad and Tobago and even.Jamaica Commemoration of Husayn ibn Ali has become a national holiday and all ethnic and religious communities participate in it
Edited sentence: In India,  Mohyal Brahmins also called Hussaini Brahmins (Brahmins are the highest caste in Hindu society) proudly claim that though being non-Muslim, a small number of them fought in the Battle of Karbala on the side of Husayn.In some countries and regions such as Iran, Iraq, Pakistan, India, Bahrain, Trinidad and Tobago and Jamaica Commemoration of Husayn ibn Ali has become a national holiday and all ethnic and religious communities participate in it.Some Mohyal Brahmins migrated eastward and became as some sub-divisions of  Bhumihar Brahmins, some of whom are also descendants of Hussaini Brahmins and mourn the death of Husayn.The  Bhumihar Brahmins, of whom many, though not all, belong to the Saryupareen Brahmin division of Kanyakubja Brahmins