Short answers, pulled from the story.
The phrase Abrahamic religions first appeared in the second half of the 20th century. Before that moment, scholars and theologians used the term Judeo-Christian to describe Judaism and Christianity together.
Islam was founded by Muhammad in the Arabian Peninsula during the 7th century AD shortly after his death. The Quran serves as central text believed to be direct revelation from God containing words of divine origin.
The Bahá'í Faith has over 8 million adherents making it the fourth largest Abrahamic religion fastest growing across the 20th century. This group emerged in the 19th century historically within an Islamic milieu sharing several beliefs.
Christianity is the largest Abrahamic religion with about 2.5 billion adherents constituting 31.1% of the world population. Followers viewed Jesus as Messiah according to the Confession of Peter before his crucifixion.
Herbert Niehr stated that Jews were only monotheists from the period of the Maccabees in the second century BC. Before this time, Yahwism existed as monolatry rather than strict monotheism.