Original sentence: "    His later role as a head of state in the Medinian period, however, has inspired some Christian historians to challenge this conception.Secular historians agree that Muhammad lived during the 7th century; many argue that headopted various monotheistic traditions in an effort to replace the common polytheistic religions of the Arabian Peninsula, eventually gaining wide acceptance as a prophet
Edited sentence: "    However, there are differing views as to whether he remained sincere later in the Medinian period.Most historians agree that Muhammad lived during the 7th century and adopted various monotheistic traditions in an effort to replace the common polytheistic religions of the Arabian Peninsula, eventually gaining wide acceptance as a prophet