Q. Muhammad bin Qasim, who was the first Muslim to have successfully invaded Sindh in 712 AD was commander of which caliphate?
Answer: Umayyad Caliphate
Notes: Muhammad bin Qasim, who was the first Muslim to have successfully invaded Sindh in 712 AD was commander of Umayyad Caliphate general, who, during the reign of Caliph al-Walid I led the Muslim conquest of Sindh and Multan. He was able to defeat the third and the last Maharaja of the Brahmin dynasty, Raja Dahir. Raja Dahir was killed in the Battle of Aror.