Muslims conquered Egypt under the Leadership of ___________?

A. Saa bin Abi Waqas
B. Khalid bin Walid
C. Amir bin A’s
D. Hajjaj bin Yousuf

Amir bin A’s launched the conquest of Egypt on his own initiative in late 639, defeating the Byzantines in a string of victories ending with the surrender of Alexandria in 641 or 642. It was the swiftest of the early Muslim conquests and Egypt has remained under Muslim rule since.