Complex sentence: The dynasty lived under great turmoil due to bloody succession feuds that made their hold on power tenuous, and after the massacre of thousands of civilians in Isfahan; including more than three thousand religious scholars, nobles, and members of the Safavid family.
Split into simpler sentences: The dynasty lived under great turmoil due to bloody succession feuds that made their hold on power tenuous. There was a massacre of thousands of civilians in Isfahan; including more than three thousand religious scholars, nobles, and members of the Safavid family.