Which family rebelled established a caliphate in Baghdad and eliminated all of the remaining members of the Umayyad Dynasty because they wanted a more religious-based leadership?

The Abbasid family rebelled against the Umayyad Dynasty and established a caliphate in Baghdad. Their rise to power was driven by a desire for a more religiously-oriented leadership, as they sought to represent the interests of the diverse Muslim community, particularly the Shiites and those discontented with Umayyad rule. The Abbasids systematically eliminated remaining Umayyad members to consolidate their control and authority.