30th century BC
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(31st century BC - 30th century BC - 29th century BC - other centuries)
(4th millennium BC - 3rd millennium BC - 2nd millennium BC)
Events
- 2925 - 2776 BC - First Dynasty wars in Egypt
- 2900 BC - Beginning of the Early Dynastic Period I in Mesopotamia.
Significant persons
Inventions, discoveries, introductions
- The shekal was introduced in Mesopotamia as a monetary and weight unit, see ancient weights and measures.pl:XXX wiek p.n.e.