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The 9th century refers to the period from 800 to 899 CE, a time when major civilizations around the world were undergoing significant changes and transformations. This era matters historically because it saw important developments like the spread of Islam, the rise of new kingdoms in Europe following the fall of Rome, and the flourishing of Chinese culture under the Tang Dynasty.
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Viking Longship, used by the Norse Raiders during the Viking Age.
The 9th century was a period from 801 (represented by the Roman numerals DCCCI) through 900 (CM) in accordance with the Julian calendar.