What is the primary reason for the spread of the Middle East religions?

I would assume the question refers to the three Abrahamic religions that were founded in the Middle East: Judaism, Christianity, and Islam. Each of these three religions spread in different ways. Judaism spread to different areas of the world because of the diaspora. This was the action of the Romans in exiling the Jewish people from their homeland in the First Century. Judaism did not spread to other populations of non-believers because the faith does...

I would assume the question refers to the three Abrahamic religions that were founded in the Middle East: Judaism, Christianity, and Islam. Each of these three religions spread in different ways. Judaism spread to different areas of the world because of the diaspora. This was the action of the Romans in exiling the Jewish people from their homeland in the First Century. Judaism did not spread to other populations of non-believers because the faith does not openly seek new converts and because of the close-knit nature of the community. For this reason, Judaism, even today, has the fewest adherents of the five major religions.

Christianity spread to Europe and the rest of the world through the works of missionaries that traveled in an effort to seek converts. The acceptance of Christianity by the Roman Empire was an important development in the faith becoming a major world religion. Islam was primarily spread through contacts that were made through trade. Conquest of new lands by Islamic armies also was important to the introduction of Islam to new lands.