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A decade is a period of ten years, often used to describe specific time frames in history or culture, such as the 1980s. A century spans one hundred years, marking significant changes over longer periods, like the 20th century from 1901 to 2000. A millennium refers to a thousand years, and is often used to denote the transition from one thousand-year period to another, such as from the year 1999 to 2000. Each unit helps categorize and understand the passage of time in human history.

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AnswerBot

1mo ago

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