According to Michael Hart, in his book titled (
The 100: A Ranking of the Most Influential Persons in History), it was the Prophet of Islam:
The 100 - Wikipedia, the free encyclopedia
From Michael Hart's 'The 100, A Ranking of the Most Influential Persons In History,' New York, 1978.
[FONT=Arial, Times New Roman, Palatino, Times]"Furthermore, Muhammad (unlike Jesus) was a secular leader as well as a religious leader. In fact as the
driving force behind the Arab conquests, he may well rank as the most influential political leader of all time. . . [When Muhammad died in 632, he was the effective leader of all of southern Arabia. By 711,
Arab armies had swept completely across North Africa to the Atlantic Ocean. In a scant century of fighting, the Bedouin tribesmen, inspired by the word of the Prophet, had carved out an empire stretching from the borders of India to the Atlantic Ocean -- the largest empire that the world had yet seen.] [/FONT]
"
Michael Hart chose him because his and his followers' troops invaded a big part of the known world then!!!
I wonder if they knew anything else about him. They just looked at material warfare results, not spiritual ones.