
Human history, or world history, is the narrative of
humanity
Humanity most commonly refers to:
* Human
Humans (''Homo sapiens'') are the most populous and widespread species of primates, characterized by bipedality, opposable thumbs, hairlessness, and intelligence allowing the use of culture, language a ...

's past. It is understood through
archaeology
Archaeology or archeology is the study of human activity through the recovery and analysis of material culture. Archaeology is often considered a branch of socio-cultural anthropology, but archaeologists also draw from biological, geological ...
,
anthropology
Anthropology is the of ity, concerned with , , , and , in both the present and past, including . studies patterns of behaviour, while studies cultural meaning, including norms and values. studies how language influences social life. studi ...
,
genetics
Genetics is a branch of biology
Biology is the natural science that studies life and living organisms, including their anatomy, physical structure, Biochemistry, chemical processes, Molecular biology, molecular interactions, Physiology, p ...

, and
linguistics
Linguistics is the scientific study of language
A language is a structured system of communication used by humans, including speech (spoken language), gestures (Signed language, sign language) and writing. Most languages have a writing ...

, and since the
advent of writing, from
primary
Primary or primaries may refer to:
Arts, entertainment, and media Music Groups and labels
* Primary (band), from Australia
* Primary (musician), hip hop musician and record producer from South Korea
* Primary Music, Israeli record label
Works
* ...

and
secondary source
In scholarship
A scholarship is an award of Student financial aid, financial aid for a student to further their education at a private elementary or secondary school, or a private or public post-secondary college, university, or other academi ...
s.
Humanity's written history was preceded by its
prehistory
Prehistory, also known as pre-literary history, is the period of human history
Human history, or world history, is the narrative of Human, humanity's past. It is understood through archaeology, anthropology, genetics, and linguistics, ...
, beginning with the
Palaeolithic Era ("Old Stone Age"), followed by the
Neolithic Era
The Neolithic period is the final division of the Stone Age, with a wide-ranging set of developments that appear to have arisen independently in several parts of the world. It is first seen about 12,000 years ago when the first developments of ...
("New Stone Age"). The Neolithic saw the
Agricultural Revolution begin, between 10,000 and 5000
BCE
Common Era (CE) is one of the year notations used for the Gregorian calendar
The Gregorian calendar is the used in most of the world. It was introduced in October 1582 by as a modification of the , reducing the average year from 365.2 ...
, in the
Near East
The Near East ( ar, الشرق الأدنى, al-Sharq al-'Adnā, he, המזרח הקרוב, arc, ܕܢܚܐ ܩܪܒ, fa, خاور نزدیک, Xāvar-e nazdik, tr, Yakın Doğu) is a geographical term which roughly encompasses a transcontinental ...
's
Fertile Crescent
The Fertile Crescent is a crescent-shaped region in the Middle East
The Middle East ( ar, الشرق الأوسط, ISO 233
The international standard
are technical standards developed by international organizations (intergovernmental orga ...

. During this period, humans began the systematic
husbandry
Animal husbandry is the branch of agriculture
Agriculture is the science, art and practice of cultivating plants and livestock. Agriculture was the key development in the rise of sedentism, sedentary human civilization, whereby farming of ...

of plants and animals. As agriculture advanced, most humans transitioned from a
nomad
A nomad ( frm, nomade "people without fixed habitation") is a member of a community without fixed habitation who regularly moves to and from the same areas. Such groups include hunter-gatherer
A hunter-gatherer is a human
Humans (''Homo ...

ic to a settled lifestyle as farmers in
. The relative security and increased productivity provided by farming allowed communities to expand into increasingly larger units, fostered by advances in
transportation
Transport (in British English
British English (BrE) is the standard dialect of the English language
English is a West Germanic languages, West Germanic language first spoken in History of Anglo-Saxon England, early medieval Engl ...
.
Whether in prehistoric or historic times, people always needed to be near reliable sources of
drinking water
Drinking water, also known as potable water, is that is safe to or use for . The amount of drinking water required to maintain good health varies, and depends on physical activity level, age, health-related issues, and environmental conditions ...

. Settlements developed as early as 4,000 BCE in
Iran
Iran ( fa, ایران ), also called Persia, and officially the Islamic Republic of Iran, is a country in Western Asia
Western Asia, West Asia, or Southwest Asia, is the westernmost subregion
A subregion is a part of a larger regio ...
,
[People, "New evidence: modern civilization began in Iran", 10 Aug 2007](_blank)
, retrieved 1 October 2007
, xinhuanet.com, 10 August 2007 in
Mesopotamia
Mesopotamia ( grc, Μεσοποταμία ''Mesopotamíā''; ar, بِلَاد ٱلرَّافِدَيْن ; syc, ܐܪܡ ܢܗܪ̈ܝܢ, or , ) is a historical region of Western Asia situated within the Tigris–Euphrates river system, in the ...

, in the
Indus River valley#REDIRECT Indus River#REDIRECT Indus River
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on the Indian subcontinent, on the banks of