History is an umbrella term that relates to past events as well as the discovery, collection, organization, and presentation of information about these events. The term includes cosmic, geologic, and organic history, but is often generically implied to mean human history. Scholars who write about history are called historians.History can also refer to the academic discipline which uses a narrative to examine and analyse a sequence of past events, and objectively determine the patterns of cause and effect that determine them.Historians sometimes debate the nature of history and its usefulness by discussing the study of the discipline as an end in itself and as a way of providing "perspective" on the problems of the present.Stories common to a particular culture, but not supported by external sources (such as the tales surrounding King Arthur) are usually classified as cultural heritage or legends, because they do not support the "disinterested investigation" required of the discipline of history. Events occurring prior to written record are considered prehistory.Herodotus, a 5th-century B.C. Greek historian is considered within the Western tradition to be the "father of history", and, along with his contemporary Thucydides, helped form the foundations for the modern study of human history. Their work continues to be read today and the divide between the culture-focused Herodotus and the military-focused Thucydides remains a point of contention or approach in modern historical writing. In the Eastern tradition, a state chronicle the Spring and Autumn Annals was known to be compiled from as early as 722 BCE although only 2nd century BCE texts survived.