World Religions
Judaism
Judaism's core text, the Torah, has been read aloud in an unbroken weekly cycle for so many centuries that the practice itself is older than most nations currently in existence.
Buddhism
A major world religion that, unusually among the largest ones, isn't actually centered on worshipping a creator god at all.
Christianity
The world's single largest religion traces its entire foundation back to the life and death of one specific person in a relatively small corner of the ancient Roman Empire.
Islam
The country with the largest Muslim population in the world isn't in the Middle East at all — it's Indonesia, in Southeast Asia.
Hinduism
A major world religion with well over a billion followers today, and no single founder, no single holy book, and no single fixed moment of origin.