It’s A I know this because I’m a 1st grader that knows everything simple I’m just cut different
<span><span>A.
</span>Millennia</span>
Millennia a
plural form of millennium is equivalent to 1000 years. Which means that 2
millennia is equivalent to 2,000 years span of time. Centuries, a plural form
of century on the other hand is 100 years in total, only. And lastly a decade,
is 10 years in total. All of these are terms in which they pertains to certain
amount of time which increases by power of 10. As you noticed.
10 – Decade
100 – Century
1000 – Millennium
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