Understanding the beginnings of Islam

Your answer must make specific references to both chapters and 1 and 2 of Jonathan Brown’s book, in the form of short quotes or paraphrases, with proper page citations. In addition, your answer should address all parts of the question (religious heritage, imperial rivalries, and tribalism).

*******IMPORTANT: The book you need to complete this assignment is attached in PDF form. Please do not use any other sources besides this book to answer the question. Any info pulled from the internet or any other source besides the attached book will be an automatic fail. Please make sure to pull information and quotes that you need from both chapters.
Please do not hesitate to ask any questions if there is confusion.