In medieval Europe, incessant private warfare brought about a permanent military class, and the institution of knighthood was well established by the 10th century. After 1100, military tenure was generally subject to the law of primogeniture, which resulted in a class of landless knights, who formed the great military orders of knighthood at the time of the Crusades, including the Knights Templars and the Knights Hospitalers. In modern Britain, women who are knighted are addressed as what? Discuss
Source: The Free Dictionary