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1950 BC—The copper bar cubit of Nippur defines the Sumerian cubit (approximately 51.72 cm).  c. 1900 BC - Cacao is domesticated by the Mokaya in Guatemala. Sovereign states. See: List of sovereign states in the 20th century BC. References
Pages in category "20th century BC" The following 2 pages are in this category, out of 2 total. This list may not reflect recent changes ().
The 1st century BC, also known as the last century BC, started on the first day of 100 BC and ended on the last day of 1 BC.The AD/BC notation does not use a year zero; however, astronomical year numbering does use a zero, as well as a minus sign, so "2 BC" is equal to "year –1".
Egyptian chronology is the study of events in ancient Egypt, and trying to date to when they took place. There is a general agreement about this chronology among Egyptologists . The Old Kingdom began in the 27th century BC , the Middle Kingdom in the 21st century BC and the New Kingdom in the mid- 16th century BC .
The 21st century BC was a century which lasted from the year 2100 BC to 2001 BC. Events [ edit ] Ur-Nammu (seated) bestows governorship on Ḫašḫamer, patesi (high priest) of Iškun- Sin (cylinder seal impression, ca. 2100 BC).
3 days ago · The Minoan civilization was a Bronze Age civilization that arose on the island of Crete and flourished from approximately the 27th century BC to the 15th century BC. It was rediscovered at the beginning of the 20th century through the work of the British archaeologist Arthur Evans .