Book excerpt: Why are there so many religions in the world? How do they differ? What do they have in common? This easy-to-understand, comprehensive guide examines the belief systems of the world's major faiths, with illustrated sections that provide a visual guide to the rituals and practices of the various denominations throughout history and today. A fold-out chart provides a comparison of world religions at a glance and a comprehensive time-line chronicles the history of religion to the present day. A "Geography of Belief" maps out religious origins and histories, and major religious figures throughout the centuries are introduced.