Islamic Studies
Caliphate & Rulers: From the Rightly Guided Caliphs to the Ottoman Caliphate
During whose reign did the Battle of Karbala and martyrdom of Husayn (RA) take place?
Explanation
The Battle of Karbala occurred in 61 AH during the reign of Yazid bin Mu'awiyah, resulting in the martyrdom of Husayn (RA).
Reference: Islamic Studies - Caliphate & Rulers
, Page 7