This dynasty came to an end after Marwan II lost the Battle of the Zab, after which Abd al-Rahman established a branch in Spain.
A 17-year-old general fighting for this dynasty defeated Raja Dahir to conquer Sindh. That relative of Hajjaj bin Yousef was Muhammad bin Qasim. This entity's battles with Turgesh tribes included the disastrous Day of Thirst. It was opposed by and ultimately brought down with help from the Hashimiyah. The Byzantine emperor and his son defeated this dynasty at Akroinon. Its founder won the Battle of Siffin and later founded this dynasty with the help of the Kharijites. This dynasty came to an end after Marwan II lost the Battle of the Zab, after which Abd al-Rahman established a branch in Spain. Its first ruler was the son of Abu Sufyan and was named Muawiyah. He had risen to power at the expensive of Ali, the last of the Rightly Guided Caliphs. For 10 points, name this first Muslim dynasty.
A 17-year-old general fighting for this dynasty defeated Raja Dahir to conquer Sindh.
Umayyad Dynasty or Caliphate