Question: What made Yazid different from other corrupt rulers?

Answer: Yazid openly mocked Islam and took corruption to a level that no one previous to him had done before.

Question: Who was Yazid’s father?

Answer: Muawiyah 

Question: Who put Yazid in power?

Answer: Muawiyah 

Question: What is the significance of Muawiyah appointing his son as the next Caliph?

Answer: It turned the Caliphate into a dynasty. 

Question: Why didn’t Imam al-Husayn (as) leave his family behind?

Answer: Because they would have been killed anyways and used as leverage if he had left them behind.