shia
The Fatimids result from high caloric intake, making the Abbasids very timid.
the Shiites.
Fatimids
Yes. The Seljuks and Fatimids were enemies of one another and had numerous conflicts over control of the southern Levant and the Sinai. However, both Islamic Empires had other, less important, adversaries.
Persians, Fatimids, Seljuks, and Byzantines.
It had no initial effect. The Fatimids had already lost Jerusalem and its environs to the Seljuks before the Seljuks lost Jerusalem and its environs to the Crusaders. The Crusades, however, strengthened the Muslim forces' loyalty to Saladin and allowed him to form the Ayyubid Sultanate. The Ayyubid Sultanate was able to conquer the Egyptian Fatimids after the fall of the Crusader States.
The Fatimids were Muslims, so the question is a little confusing. If the question is trying to ask why the Fatimids attacked neighboring Aghlabids, Ikhshidids, and Abbassids (which were all Islamic Caliphates), the reason is simply that the Fatimid Caliphate was an ascendant power and saw fit to conquer all neighboring territories. The fact that they were already under Islamic control did not change anything.
Yes. The Seljuks and Fatimids were enemies of one another and had numerous conflicts over control of the southern Levant and the Sinai. However, both Islamic Empires had other, less important, adversaries.
The Fatimids were a dynasty that ruled parts of North Africa and the Middle East from the 10th to the 12th century. They were Shia Muslims and established Cairo as their capital. The Fatimids are known for their contributions to art, architecture, and learning during their rule.
The Fatimids at the beginning, the Crusaders at the end.
Yes. But they were not Twelver Shiites; they were Shiite Muslims of the Ismaili (Sevener) School.