Complex sentence: The Raisani appear to have been in the country before the Brahuis rose to power in the 17th century, and according to tradition assisted the latter in conjunction with the Dehwars to conquer Kalat from the Mirwani's.
Split into simpler sentences: The Raisani appear to have been in the country before the Brahuis rose to power in the 17th century. According to tradition they assisted the latter in conjunction with the Dehwars to conquer Kalat from the Mirwani's.