The 31st century BC was a

century A century is a period of 100 years. Centuries are numbered ordinally in English and many other languages. The word ''century'' comes from the Latin ''centum'', meaning ''one hundred''. ''Century'' is sometimes abbreviated as c. A centennial or ...

that lasted from the year 3100 BC to 3001 BC.

Events

*c. 3100 BC:

Polo Polo is a ball game played on horseback, a traditional field sport and one of the world's oldest known team sports. The game is played by two opposing teams with the objective of scoring using a long-handled wooden mallet to hit a small ha ...

( mni,

Sagol Kangjei Polo is a ball game played on horseback, a traditional field sport and one of the world's oldest known team sports. The game is played by two opposing teams with the objective of scoring using a long-handled wooden mallet to hit a small hard ...

) was first played in

Manipur Manipur () ( mni, Kangleipak) is a state in Northeast India, with the city of Imphal as its capital. It is bounded by the Indian states of Nagaland to the north, Mizoram to the south and Assam to the west. It also borders two regions of ...

state. *c. 3100 BC?: The Anu Ziggurat and White Temple are built in

Uruk Uruk, also known as Warka or Warkah, was an ancient city of Sumer (and later of Babylonia) situated east of the present bed of the Euphrates River on the dried-up ancient channel of the Euphrates east of modern Samawah, Muthanna Governorate, Al ...

. *c. 3100 BC?: Predynastic period (Neolithic) ends in Ancient Egypt. *c. 3100 BC?: Early Dynastic (Archaic) period starts in Ancient Egypt. *c. 3100 BC?: The first temple of Tarxien is in use by the

Neolithic The Neolithic period, or New Stone Age, is an Old World archaeological period and the final division of the Stone Age. It saw the Neolithic Revolution, a wide-ranging set of developments that appear to have arisen independently in several pa ...

inhabitants of

Malta Malta ( , , ), officially the Republic of Malta ( mt, Repubblika ta' Malta ), is an island country in the Mediterranean Sea. It consists of an archipelago, between Italy and Libya, and is often considered a part of Southern Europe. It lies ...

. *c. 3100 BC?: First stage in the construction of

Stonehenge Stonehenge is a prehistoric monument on Salisbury Plain in Wiltshire, England, west of Amesbury. It consists of an outer ring of vertical sarsen standing stones, each around high, wide, and weighing around 25 tons, topped by connec ...

. *c. 3100 BC – 2600 BC:

Skara Brae Skara Brae is a stone-built Neolithic settlement, located on the Bay of Skaill on the west coast of Mainland, the largest island in the Orkney archipelago of Scotland. Consisting of ten clustered houses, made of flagstones, in earthen dam ...

Orkney Islands Orkney (; sco, Orkney; on, Orkneyjar; nrn, Orknøjar), also known as the Orkney Islands, is an archipelago in the Northern Isles of Scotland, situated off the north coast of the island of Great Britain. Orkney is 10 miles (16 km) no ...

Scotland Scotland (, ) is a country that is part of the United Kingdom. Covering the northern third of the island of Great Britain, mainland Scotland has a border with England to the southeast and is otherwise surrounded by the Atlantic Ocean to ...

is inhabited. *c. 3090 BC:

Narmer Narmer ( egy, Wiktionary:nꜥr-mr, nꜥr-mr, meaning "painful catfish," "stinging catfish," "harsh catfish," or "fierce catfish;" ) was an ancient Egyptian pharaoh of the Early Dynastic Period (Egypt), Early Dynastic Period. He was the successor ...

(Menes) unifies Upper and

Lower Egypt Lower Egypt ( ar, مصر السفلى '; ) is the northernmost region of Egypt, which consists of the fertile Nile Delta between Upper Egypt and the Mediterranean Sea, from El Aiyat, south of modern-day Cairo, and Dahshur. Historically, ...

into one country; he rules this new country from

Memphis Memphis most commonly refers to: * Memphis, Egypt, a former capital of ancient Egypt * Memphis, Tennessee, a major American city Memphis may also refer to: Places United States * Memphis, Alabama * Memphis, Florida * Memphis, Indiana * Memp ...

. *c. 3051 BC: The oldest currently living organism, a

Great Basin bristlecone pine ''Pinus longaeva'' (commonly referred to as the Great Basin bristlecone pine, intermountain bristlecone pine, or western bristlecone pine) is a long-living species of bristlecone pine tree found in the higher mountains of California, Nevada, an ...

, undergoes germination in the White Mountains of California.

Inventions, discoveries, introductions

Drainage Drainage is the natural or artificial removal of a surface's water and sub-surface water from an area with excess of water. The internal drainage of most agricultural soils is good enough to prevent severe waterlogging (anaerobic condition ...

and

sewage Sewage (or domestic sewage, domestic wastewater, municipal wastewater) is a type of wastewater that is produced by a community of people. It is typically transported through a sewer system. Sewage consists of wastewater discharged from reside ...

system in the

Indus Valley The Indus ( ) is a transboundary river of Asia and a trans-Himalayan river of South and Central Asia. The river rises in mountain springs northeast of Mount Kailash in Western Tibet, flows northwest through the disputed region of Kashmir, ...

* Dams,

canal Canals or artificial waterways are waterways or engineered channels built for drainage management (e.g. flood control and irrigation) or for conveyancing water transport vehicles (e.g. water taxi). They carry free, calm surface f ...

stone sculpture A stone sculpture is an object made of stone which has been shaped, usually by carving, or assembled to form a visually interesting three-dimensional shape. Stone is more durable than most alternative materials, making it especially important in ...

s using

inclined plane An inclined plane, also known as a ramp, is a flat supporting surface tilted at an angle from the vertical direction, with one end higher than the other, used as an aid for raising or lowering a load. The inclined plane is one of the six cla ...

and

lever A lever is a simple machine consisting of a beam or rigid rod pivoted at a fixed hinge, or '' fulcrum''. A lever is a rigid body capable of rotating on a point on itself. On the basis of the locations of fulcrum, load and effort, the lever is d ...

Sumer Sumer () is the earliest known civilization in the historical region of southern Mesopotamia (south-central Iraq), emerging during the Chalcolithic and early Bronze Ages between the sixth and fifth millennium BC. It is one of the cradles of ...

and the Tigris-Euphrates Valley *

Copper Copper is a chemical element with the symbol Cu (from la, cuprum) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pink ...

was in use, both as tools and weapons *

Senet Senet or senat ( egy, znt, translation=passing; cf. Coptic ⲥⲓⲛⲉ /sinə/ "passing, afternoon") is a board game from ancient Egypt. The earliest representation of senet is dated to E from the Mastaba of Hesy-Re, while similar boards and ...

is one of the oldest known board games in the world. * c. 3100 BC – Invention of

writing Writing is a medium of human communication which involves the representation of a language through a system of physically inscribed, mechanically transferred, or digitally represented symbols. Writing systems do not themselves constitute h ...

Mesopotamia Mesopotamia ''Mesopotamíā''; ar, بِلَاد ٱلرَّافِدَيْن or ; syc, ܐܪܡ ܢܗܪ̈ܝܢ, or , ) is a historical region of Western Asia situated within the Tigris–Euphrates river system, in the northern part of the ...

and

Egypt Egypt ( ar, مصر , ), officially the Arab Republic of Egypt, is a List of transcontinental countries, transcontinental country spanning the North Africa, northeast corner of Africa and Western Asia, southwest corner of Asia via a land bridg ...

*The

Sydney rock engravings Sydney rock engravings, or Sydney rock art, are a form of Australian Aboriginal rock art in the sandstone around Sydney, New South Wales, Australia, that consist of carefully drawn images of people, animals, or symbols. Many thousands of such en ...

date to around 3000 BC (

Sydney Sydney ( ) is the capital city of the state of New South Wales, and the most populous city in both Australia and Oceania. Located on Australia's east coast, the metropolis surrounds Sydney Harbour and extends about towards the Blue Mounta ...

Australia Australia, officially the Commonwealth of Australia, is a sovereign country comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands. With an area of , Australia is the largest country by ...

).Australia's top 7 Aboriginal rock art sites by Australian Geographic
/ref>

Notes

References

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