what are the three main religions

The three main religions in terms of global popularity and followers are:

1. Christianity: This monotheistic religion is based on the life and teachings of Jesus Christ. With more than 2.3 billion followers worldwide, Christianity is the largest religion in the world.

2. Islam: Islam is a monotheistic religion founded by the Prophet Muhammad in the 7th century. It has over 1.8 billion followers globally and is based on the teachings of the Quran.

3. Hinduism: Hinduism is one of the oldest religions, originating in the Indian subcontinent. It is a complex and diverse religion, with beliefs and practices varying greatly among its more than 1 billion followers. Hinduism is characterized by a belief in karma, reincarnation, and multiple deities.

It's important to note that other major religions like Buddhism, Judaism, and Sikhism also have significant numbers of followers globally.