Narrating Islam as the Early Warrior Cult: The Scholar's Speak

This somewhat politically-incorrect view of Islam from historians and other critics is in a narrative and plain-speak form.The ebook points out there was a "Mohammed" but who was more a raider of caravans who later received cult status and Arab legend. The truest indicator of this hypothesis is the Koran itself which writes at length regarding these raids.
Later, the "Wrongly-Guided Caliphs" took the Arab legend from there, hiking north and east with their small armies to take over North Africa, Syria, Canaan, Persia, northern India and Spain. Yet throughout these century-long conquests there was very little artifacts regarding either a religion called Islam or Mohammed himself. That would be the 9th-10th centuries.