4th millennium BC

Millennia - [Millennium in Review 4th millenium BC]?

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

Centuries: [40th century BC]?, [39th century BC]?, [38th century BC]?, [37th century BC]?, [36th century BC]?, [35th century BC]?, [34th century BC]?, [33rd century BC]?, [32nd century BC]?, [31st century BC]?

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Events:

Significant persons: