LectureExercisesQuestionAnsweran area under the control of a Muslim ruler called a caliphcaliphatea term meaning “rightly guided” that describes the first four caliphs after Muhammad’s death: Abu Bakr, Umar, Uthman, and AliRashidunPractice this lessonThe content of this course has been taken from the free World History, Volume 1: to 1500 textbook by Openstax