A dynasty is a sequence of rulers from the same family, usually in the context of a monarchical system, but sometimes also appearing in republics. A dynasty may also be referred to as a "house", "family" or "clan", among others. Historians periodize the histories of many states and civilizations, such as Ancient Iran (3200 – 539 BC), Ancient Egypt (3100 – 30 BC), and Ancient and Imperial China (20... Wikipedia