This document provides an overview of Christianity, covering its history, core beliefs and practices, structures, and regulations. It discusses Christianity's historical foundations in Jesus Christ and the development of its major branches. The core beliefs include the Trinity, creation, salvation, and eschatology. Key practices involve worship, sacraments, prayer, and festivals. Christianity is organized into churches, denominations, and hierarchical leadership structures, with internal regulations around membership and external relations with other faiths and societies.