I believe the correct answer to this would be A). Epidemics
The start of Islam is marked in the year 610, following the first revelation to the prophet Muhammad at the age of 40. Muhammad and his followers spread the teachings of Islam throughout the Arabian peninsula. ... The angel recites to him the first revelations of the Quran and informs him that he is God's prophet.
I hope that helps. Plz give me Brainlest if you like my answer
It reduce the threat of foreign competition for north America