A cult is an organisation that has a set of beliefs in which the cult is viewed as being the one true organization, everyone else is wrong.
Usually they promote some kind of religious belief
- usually made up by themself - but not always, some cults can be athiest, such as Amway
Usually members have black-and-white thinking, and see their organization as being infaliable.
Members of a cult can be known as follower
Followers will obay the cult leaders instructions and believe the propaganda without needing to verify it with much proof.
They are usually superstitious
Cult members can be of average intelligence.
When people wonder about how a cult works, they usually focus on what the leader is doing. Usually the leader is just a charasma
The real mechanics of how a cult works can be understood by focusing on the psychology of the follower.
The cult had over 1,000,000 members, each of whom, believed that the leader knew the secret of power, and by following him, and by buying all of his products, they too, would understand the secret.
Cult B had 1,000 members, and members believed they were with the right way because so many around them were following the crazy ideas, and the leader seemed so powerful.