What was the result of the first civil war between Ali and the Umayyads?

The first civil war between Ali and the Umayyads, known as the First Fitna (656-661 CE), culminated in Ali's defeat. The conflict was marked by significant battles, including the Battle of Siffin, which ended inconclusively and led to arbitration. Ultimately, Ali was assassinated in 661 CE, and the Umayyad leader Muawiya ibn Abi Sufyan established the Umayyad Caliphate, marking a significant shift in Islamic leadership and governance. This event solidified the Umayyads' power and deepened the Sunni-Shia divide within the Muslim community.