31st century BC

For people who check facts

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

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

Table of contents

1 Events
2 Significant persons
3 Inventions, discoveries, introductions

Events

3000 BC – Menes unifies Upper and Lower Egypt, and a new capital is erected at Memphis.
3000 BC – Highly developed cities were to be found in the Indus valley civilization. See also Punjab and History of the Punjab.

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 Sumer
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.