Re: The Qarmations: Killing Hajjis and stealing the Black Stone from the Kaaba
Ismaili power was mostly broken by the time of the Bohri/Agha Khani split. The Sunni army of the Fatimid Caliphate was running the Caliphate with just an Ismaili figurehead.
When the Nizaris (who became the Agha Khanis, because that Caliph’s elder son was called Al-Nizar) left Egypt, they settled in Alamut in Lebanon and became the Hashashiyya, the Assasins, striking out at everyone they felt was unjust (Crusaders, Sunnis, and the group that became the Bohris, named the Mustalis, after the younger son, Al-Mustali).
When the Mongols crushed the Hashashhiyya, they were forced to scatter again, eventually settling in Persia. When their missionaries started finding converts in India, they relocated their Imam to India in the 1800s, where he got the title Agha Khan.
The Bohris ended up in India after a power struggle. Fatimid missionaries had already found converts in India; after one of the Fatimid Caliph’s / Imams died, his cousin seized power in Cairo but most religious Ismailies left in Egypt believed that his infant son was the rightful Imam. The boy went into exile and then into hiding (where they believe he still lives on as the hidden Imam). Eventually, an Indian Ismaili was chosen to be the movement’s first non-Arab leader, beginning the transition of the mostly Arab Mustalis into today’s Indian Dawoodi Bohris.