In Asia, a state chronicle, the Spring and Autumn Annals was known to be compiled from as early as 722 BC although only 2nd-century BC texts survived.
Ancient influences have helped spawn variant interpretations of the nature of history which have evolved over the centuries and continue to change today.
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 show the "disinterested investigation" required of the discipline of history.
Some naturally occurring minerals possess a permanent magnetization.
Certain processes such as sedimentation or kiln-firing can cause the particles in structures made of such materials to align themselves with the direction of Earth's magnetic field at the time.
Events occurring before written record are considered prehistory.
It is an umbrella term that relates to past events as well as the memory, discovery, collection, organization, presentation, and interpretation of information about these events.
This was achieved by providing clear information about the technique, and by addressing the questions frequently asked by archaeologists.
A database was also produced that contained all of the archaeomagnetic studies carried out in the UK since the 1950s, so that the users can see how the technique has been applied in the past to different situations.
An approach to improving the largest source of uncertainty, the independent dating, is proposed and applied to the British Iron Age, resulting in 145 directions from currently available databases being updated with revised ages and/or uncertainties, and a large scale reassessment of age assignments prior to inclusion into the Magnetic Moments of the Past and GEOMAGIA50 databases.