“If you are in an echo chamber, where you are only speaking to like-minded people, it tends to heighten the extreme voices and marginalize the moderate ones.”
A. Briefly summarize the statement above in your own words,
B. Do you agree or disagree? Explain.

it allows shippers to carry commercial goods, which allows them to save time and money.

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the border between arizona and new mexico is a thin, black line; this indicates a state boundary.

its correct: it's a thin line, and it's a state boundary, correct

the viking voyages took place during the middle ages, which was about this time. 500 to 1350. the viking voyages took place during the middle ages, which was about this time.