Complex sentence: They recount a history similar to that of the Bnei Menashe in the northeastern Indian states of Mizoram and Manipur, and like the Bnei Menashe, adopted Christianity upon the arrival of Baptist missionaries around the beginning of the 19th century.
Split into simpler sentences: They recount a history similar to that of the Bnei Menashe in the northeastern Indian states of Mizoram and Manipur. Like that group, they adopted Christianity upon the arrival of Baptist missionaries around the beginning of the 19th century.