Explanation:
The Second Triumvirate was officially recognized by the Roman government in 43 BC. Some historians consider this to be the end of the Roman Republic. The Second Triumvirate ruled for ten years until 33 BC. However, it began to split up when Octavian removed Lepidus from power in 36 BC.
The battle resulted in the military defeat of Husayn ibn Ali's group, the death of almost all of his men, and the captivity of all women and children. The Battle of Karbala is one of the most significant battles in the history of Shia Muslims
So the answer is number 1