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4000 B.C.

Millennia:
Centuries:
The Neolithic
Mesolithic
Fertile Crescent
Heavy Neolithic
Shepherd Neolithic
Trihedral Neolithic
Pre-Pottery (A, B)
Qaraoun culture
Tahunian culture
Yarmukian Culture
Halaf culture
Halaf-Ubaid Transitional period
Ubaid culture
Byblos
Jericho
Tell Aswad
Çatalhöyük
Jarmo
Europe
Arzachena culture
Boian culture
Butmir culture
Cardium Pottery culture
Cernavodă culture
Coțofeni culture
Cucuteni-Trypillian culture
Dudeşti culture
Gorneşti culture
Gumelniţa–Karanovo culture
Hamangia culture
Khirokitia
Linear Pottery culture
Malta Temples
Ozieri culture
Petreşti culture
Shulaveri-Shomu culture
Sesklo culture
Tisza culture
Tiszapolgár culture
Usatovo culture
Varna culture
Vinča culture
Vučedol culture
Neolithic Transylvania
Neolithic Southeastern Europe
China
Peiligang culture
Pengtoushan culture
Beixin culture
Cishan culture
Dadiwan culture
Houli culture
Xinglongwa culture
Xinle culture
Zhaobaogou culture
Hemudu culture
Daxi culture
Majiabang culture
Yangshao culture
Hongshan culture
Dawenkou culture
Songze culture
Liangzhu culture
Majiayao culture
Qujialing culture
Longshan culture
Baodun culture
Shijiahe culture
Yueshi culture
Tibet
South Asia
Mehrgarh
Bhirrana
Neolithic Philippines
Jade culture

farming, animal husbandry
pottery, metallurgy, wheel
circular ditches, henges, megaliths
Neolithic religion

Chalcolithic
Holocene Epoch
Holocene
Preboreal (10.3–9 ka)
Boreal (9–7.5 ka)
Atlantic (7.55 ka)
Subboreal (52.5 ka)
Subatlantic (2.5 ka–present)

The 4th millennium BC spans the years 4000 through 3000 BC. Some of the major changes in human culture during this time included the beginning of the Bronze Age and the invention of writing, which played a major role in starting recorded history.

The city states of Sumer and the kingdom of Egypt were established and grew to prominence. Agriculture spread widely across Eurasia. World population in the course of the millennium doubled, approximately from 7 to 14 million people.

farming, animal husbandry
pottery, metallurgy, wheel
circular ditches, henges, megaliths
Neolithic religion

Based on studies by glaciologist Lonnie Thompson, professor at Ohio State University and researcher with the Byrd Polar Research Center, a number of indicators shows there was a global change in climate 5,200 years ago, probably due to a drop in solar energy output as hypothesized by Ohio State University.


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Wikipedia

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