Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 91. Chapters: Islamic conquest of Afghanistan, Rashidun Caliphate, Khalid ibn al-Walid, Spread of Islam, Muslim conquest in the Indian subcontinent, Muslim conquest of Egypt, History of Islam in southern Italy, Muslim conquests, Military campaigns under Caliph Uthman, Emirate of Sicily, Umayyad conquest of North Africa, Military conquests of Umar's era, Futuh, Siege of Alexandria, Umayyad conquest of Hispania, Battle of Bosra, Abdul Rahman Al Ghafiqi, Timur's invasions of Georgia, Emirate of Bari, Sabuktigin, Battle of Iron Bridge, Siege of Marash, Battle of Hazir, Battle of Marj-al-Rahit, Siege of Aleppo, Anbasa ibn Suhaym Al-Kalbi, Peter of Farfa, Battle of Fahl, Asad ibn al-Furat. Excerpt: The Rashidun Caliphate (Arabic: ), comprising the first four caliphs in Islam's history, was founded after Muhammad's death in 632, Year 10 A.H.. At its height, the Caliphate extended from the Arabian Peninsula, to the Levant, Caucasus and North Africa in the west, to the Iranian highlands and Central Asia in the east. It was the largest empire in history up until that time. It is also known as the Patriarchal Caliphate. Expansion of Rashidun Caliphate.After Muhammad's death in 632, the Medinan Ansar debated which of them should succeed the Prophet in running the affairs of the Muslims while the Muhammad's household was busy in his burial. Umar (a Quraysh) and Abu Ubaidah ibn al-Jarrah pledged their loyalty to Abu Bakr, with the Ansar and the Quraish soon following suit. Abu Bakr thus became the first Khalifa Rasul Allah (Successor of the Messenger of God), and embarked on campaigns to propagate Islam. First, though, he would have to subdue the Arabian tribes which had gone back on their oaths of allegiance to Islam and the Islamic community. As a Khalifa or Caliph he was not a monarch and never claimed such a title nor did his three succes...