4000 B.C.

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.

4100–3100 BC: the Uruk period, with emerging Sumerian hegemony and development of "proto-cuneiform" writing; base-60 mathematics, astronomy and astrology, civil law, complex hydrology, the sailboat, potter's wheel and wheel; the Chalcolithic proceeds into the Early Bronze Age.

35002340 BC; Sumer: wheeled carts, potter's wheel, White Temple ziggurat, bronze tools and weapons.

First to Fourth dynasty of Kish in Mesopotamia.

Europe

Main article: Neolithic Europe

Central Asia

East Asia

  • Neolithic Chinese settlements. They produced silk and pottery (chiefly the Yangshao and the Longshan cultures), wore hemp clothing, and domesticated pigs and dogs.

  • Vietnamese Bronze Age culture. The Đồng Đậu Culture, 4000–2500 BC, produced many wealthy bronze objects.

South Asia

Americas

Australia

Sub-Saharan Africa

Sub-Saharan Africa remains in the Paleolithic period, except for the earliest neolithization of the Sahel following the desiccation of the Sahara in c. 3500 BC.[6][7] As the grasslands of the Sahara began drying after 3900 BC, herders spread into the Nile Valley and into eastern Africa (Eburan 5, Elmenteitan). The desiccation of the Sahara and the associated neolithisation of West Africa is also cited as a possible cause for the dispersal of the Niger-Congo linguistic phylum.


  • 4000 BCEpoch of the Masonic calendar's Anno Lucis era.

  • 3929 BC – Creation according to John Lightfoot based on the Old Testament of the Bible, and often associated with the Ussher chronology.

  • 3761 BC – Since the Middle Ages (12th century), the Hebrew calendar has been based on rabbinic calculations of the year of creation from the Hebrew Masoretic text of the bible. This calendar is used within Jewish communities for religious and other purposes. The calendar's epoch, corresponding to the calculated date of the world's creation, is equivalent to sunset on the Julian proleptic calendar date 6 October 3761 BC.[13]

  • 3114 BC – One version of the Mayan calendar, known as the Mesoamerican Long Count, uses the epoch of 11 or 13 August 3114 BC. The Maya Long Count calendar was first used approximately 236 BC (see Mesoamerican_Long_Count_calendar#Earliest_Long_Counts.

  • 3102 BC – According to calculations of Aryabhata (6th century), the Hindu Kali Yuga began at midnight on 18 February 3102 BC.

  • 3102 BCAryabhata dates the events of the Mahabharata to around 3102 BC. Other estimates range from the late 4th to the mid-2nd millennium BC.