5 ESSENTIAL ELEMENTS FOR MUHARRAM

Did the events of Karbala basically happen, and when so why do we not mention this party plus the massacre from the Prophets grandson and his kids within our Khutbas? Also did the Prophet not point out in the Hadith that there'll be twelve successors right after me? has there not been about 12 caliphs? I are actually studying about Shia Islam and a