| Millennium: | 1st millennium BC | 
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| 628 BC by topic | 
| Politics | 
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The year 628 BC was a year of the pre-Julian Roman calendar. In the Roman Empire, it was known as year 126 Ab urbe condita . The denomination 628 BC for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.