Christianity is a major world religion with approximately 2 billion followers globally. It is based on the belief that Jesus Christ is the Messiah and Son of God. There are three core aspects of Christianity: history and development, core beliefs and practices, and structures and regulations. The document provides an in-depth overview of each of these three aspects, covering topics like the historical foundations and branches of Christianity, foundational texts and theological doctrines, religious practices and rituals, church organization and leadership structures, and relations within and outside the Christian community. It concludes with sample exam questions on Christianity.