Encyclopedia > 31st century BC

Article Content

31st century BC

(32nd century BC - 31st century BC - 30th century BC - other centuries)

(5th millennium BC - 4th millennium BC - 3rd millennium BC)

Events:

Significant persons:

Ur-nina[?] first king of Lagash in Mesopotamia

Inventions, Discoveries, Introductions:

Chinese ideograms
Drainage and sewage system in India
Dams, canals, stone sculptures[?] using inclined plane and lever in Sumeria
Pyramids in Ancient Egypt
Copper was in use, both as tools and weapons.
Crude writing existed in Egypt, and cuneiform writing was invented in Mesopotamia.

All Wikipedia text is available under the terms of the GNU Free Documentation License

Search Encyclopedia

Search over one million articles, find something about almost anything!

Featured Article

Dynabee

... toy sold commercially as a wrist exerciser device. Once the gyroscope inside it is going fast enough, for example after starting it with a short rip string or by a snap ...