Shia history and theology hold this battle in high esteem for obvious reasons. What would be the effects on Shia'ism and Islam at large if this battle did not occur?
Some background on the POD from wikipedia:
Let's say Husayn takes their advice and decides to stay in Mecca.
Some background on the POD from wikipedia:
When Husayn ibn Ali was making up his mind to leave for Kufa, Abd Allah ibn Abbas and Abd Allah ibn al-Zubayr held a meeting with him and advised him not to move to Iraq, or, if he was determined to move, not to take women and children with him in this dangerous journey. Husayn ibn Ali, however, had resolved to go ahead with his plan. He gave a speech to people the day before his departure and said:
... Death is a certainty for mankind, just like the trace of necklace on the neck of young girls. And I am enamored of my ancestors like eagerness of Jacob to Joseph ... Everyone, who is going to devote his blood for our sake and is prepared to meet Allah, must depart with us...[42]
On their way to Kufa, the small caravan received the news of the execution of Muslim ibn Aqeel and the indifference of the people of Kufa.[43][44][45] Instead of turning back, Husayn decided to continue the journey and sent Qays ibn Musahir Al Saidawi as messenger to talk to the nobles of Kufa. The messenger was captured in the vicinity of Kufa but managed to tear the letter to pieces to hide names of its recipients. Just like Muslim ibn Aqeel, Qays ibn Musahir Al Saidawi was executed.
Let's say Husayn takes their advice and decides to stay in Mecca.