I want to know the answer to the following question:
What Arab leader completed the early ambitions of Arabs by conquering parts of northern India?
All the background I'm provided with is that "The book Chach Nama chronicles the Chacha Dynasty's period, following the demise of the Rai Dynasty and the ascent of Chach of Alor to the throne, down to the Arab conquest by Muhammad bin Qasim in the early 8th century AD, by defeating the last Hindu monarch of Sindh, Raja Dahir.". Is that enough to answer the question?
Answer: yes