During whose caliphate did the Islamic empire expand into Persia and parts of the Byzantine Empire?
A
Umar bin Khattab (RA)
B
Abu Bakr (RA)
C
Usman bin Affan (RA)
D
Ali bin Abi Talib (RA)
Correct Answer: Option A — Umar bin Khattab (RA)
Explanation:
Under the caliphate of Hazrat Umar (RA), the Islamic empire experienced rapid territorial expansion, conquering Persia, Jerusalem, Egypt, and significant portions of the Byzantine Empire's eastern territories.