History (from Greek ἱστορία - historia, meaning "inquiry, knowledge acquired by investigation") is the study of the human past. Scholars who write about history are called historians. It is a field of research which uses a narrative to examine and analyse the sequence of events, and it often attempts to investigate objectively the patterns of cause and effect that determine events. Historians debate the nature of history and its usefulness. This includes discussing the study of the discipline as an end in itself and as a way of providing "perspective" on the problems of the present. The stories common to a particular culture, but not supported by external sources (such as the legends surrounding King Arthur) are usually classified as cultural heritage rather than the "disinterested investigation" needed by the discipline of history. Events of the past prior to written record are considered prehistory.
The word history comes from the root *weid- "know" or "see" — from which also come Greek ἰδέᾱ (idéā) "appearance" or "kind", Latin ēvidēns and vīsiō, Italian vista, English wit, I wot, wise, and wisdom, Sanskrit veda, and Slavic videti. (See asterisk.)
Although the related verb οἷδα oîda "I know" (zero-grade aorist stem id- "see") has d, ἵστωρ has s, according to the Greek phonological rule that a dental stop (t, d, or th) before another dental stop becomes s.
The word entered the English language in 1390 with the meaning of "relation of incidents, story". In Middle English, the meaning was "story" in general. The restriction to the meaning "record of past events" arises in the late 15th century. In German, French, and most Germanic and Romance languages, the same word is still used to mean both "history" and "story". The adjective historical is attested from 1661, and historic from 1669.
Since historians are observers and participants, the works they produce are written from the perspective of their own time and sometimes with due concern for possible lessons for their own future. In the words of Benedetto Croce, "All history is contemporary history". History is facilitated by the formation of a 'true discourse of past' through the production of narrative and analysis of past events relating to the human race. The modern discipline of history is dedicated to the institutional production of this discourse.
The study of history has sometimes been classified as part of the humanities and other times as part of the social sciences. It can also be seen as a bridge between those two broad areas, incorporating methodologies from both. Some individual historians strongly support one or the other classification. In modern academia, history is increasingly classified as a social science. In the 20th century, French historian Fernand Braudel revolutionized the study of history, by using such outside disciplines as economics, anthropology, and geography in the study of global history.
Archaeology is a discipline that is especially helpful in dealing with buried sites and objects, which, once unearthed, contribute to the study of history. But archaeology rarely stands alone. It uses narrative sources to complement its discoveries. However, archaeology is constituted by a range of methodologies and approaches which are independent from history; that is to say, archaeology does not "fill the gaps" within textual sources. Indeed, Historical Archaeology is a specific branch of archaeology, often contrasting its conclusions against those of contemporary textual sources. Mark Leone, the excavator and interpreter of historical Annapolis in New Jersey (a town on east coast), has sought to understand the contradiction between textual documents and the material record, demonstrating the possession of slaves and the inequalities of wealth apparent via the study of the total historical environment, despite the ideology of "liberty" inherent in written documents at this time.