In the sixth century of the common era, the Prophet Muhammad appeared in the Arabian Peninsula, proclaiming the message that there was only one god, called Allah, and that all people should obey Allah's requirements for their lives. Today, Islam is the second-largest religion in the world, with more than 1.6 billion Muslims adhering to this faith. However, although all Muslims do revere Islam s sacred scripture, the Qur an, there are many differences in the way that the faith is practiced throughout the world. This book will discuss the origins of Islam, the major sects that follow the faith, important religious centers such as Mecca and Medina, and the elemental religious practices that unite all members of the umma, or Islamic community. The MAJOR WORLD RELIGIONS series provides information about six of the most important religious faiths practiced around the world. More than 75 percent of the world's population over 5.2 billion people observes the tenets of one of these six religions. Each book in the series describes the important beliefs of a particular religion, along with information about its history, practices, and rituals. Each title in this series includes color photos throughout, and back matter including: an index and further reading lists for books and internet resources, a timeline and organizations to contact. Key Icons appear throughout the books in this series in an effort to encourage library readers to build knowledge, gain awareness, explore possibilities and expand their viewpoints through our content rich non-fiction books. Key Icons in this series are as follows: Words to Understand are shown at the front of each chapter with definitions. These words are set in boldfaced type in that chapter, so that readers are able to reference back to the definitions--building their vocabulary and enhancing their reading comprehension. Sidebars are highlighted graphics with content rich material within that allows readers to build knowledge and broaden their perspectives by weaving together additional information to provide realistic and holistic perspectives. Educational Videos are offered in chapters through the use of a QR code, that, when scanned, takes the student to an online video showing a moment in history, a speech, or an instructional video. This gives the readers additional content to supplement the text. Text-Dependent Questions are placed at the end of each chapter. They challenge the reader s comprehension of the chapter they have just read, while sending the reader back to the text for more careful attention to the evidence presented there. Research Projects are provided at the end of each chapter as well and provide readers with suggestions for projects that encourage deeper research and analysis. And a Series Glossary of Key Terms is included in the back matter containing terminology used throughout the series. Words found here broaden the reader s knowledge and understanding of terms used in this field.