This document provides an overview of major belief systems from the classical period, including Hinduism, Judaism, Zoroastrianism, Buddhism, Greek Rationalism, Legalism, Confucianism, Daoism, and Christianity. It discusses their origins and founders, core beliefs around existence after death, how they challenged social hierarchies and spread geographically. Key points covered include that Hinduism and Buddhism believe in cyclical existence until spiritual liberation, while Zoroastrianism and Christianity believe in linear existence. Buddhism and Christianity appealed more to lower classes and women. Major religions spread through missionaries, conquest, trade routes and migration.