1st millennium BC

Millennia:	2nd millennium BC; 1st millennium BC; 1st millennium AD;
Centuries:	10th century BC; 9th century BC; 8th century BC; 7th century BC; 6th century BC; 5th century BC; 4th century BC; 3rd century BC; 2nd century BC; 1st century BC;

The 1st millennium BC, also known as the last millennium BC, was the period of time lasting from the years 1000 BC to 1 BC (10th to 1st centuries BC; in astronomy: JD 1356182.5 – 1721425.5^[1]). It encompasses the Iron Age in the Old World and sees the transition from the Ancient Near East to classical antiquity.

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World population roughly doubled over the course of the millennium, from about 100 million to about 200–250 million.^[2]

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1st millennium BC

Millennium between 1000 BC and 1 BC / From Wikipedia, the free encyclopedia

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Millennia:	2nd millennium BC 1st millennium BC 1st millennium AD
Centuries:	10th century BC 9th century BC 8th century BC 7th century BC 6th century BC 5th century BC 4th century BC 3rd century BC 2nd century BC 1st century BC