Mithraism.

where did this religion originate?

 evidence shows it originates from Iran/India, it is thought that is was the indian army who brought it over to this counrty where it quickly became popular.

Who tended to practice Mithraism?

It was mainly the Army who followed this religion and absoloutly no women were allowed to worship the god Mithras.

Why was it called a Mystery cult?

The cult had secret rituals that only the members knew about, also you had to pass…