Choose the answer that best matches the word in italics. Use context clues to determine the meaning of the word, if necessary.
For many millennia, people believed Earth was flat. (1 point)
centuries
The word in italics is "millennia."
To determine the meaning of the word, we can look at the context clues in the sentence. The sentence mentions that people believed Earth was flat for many millennia.
From this, we can deduce that "millennia" refers to a long period of time.
So, the best answer that matches the meaning of "millennia" is: a long time.