Thoreau mostly uses imagery to illustrate time in the excerpt. The second sentence is saying that he is in the midst of time/living, and he can "detect how shallow it is," meaning that he is aware that life is short and that the end is inevitable. Thoreau also describes time as being fleeting, but ever-present.
I hope this helps!
Answer:
Communication happened during trade, and when the people they traded with went back to their home land, they tell the stories to other people making it spread or globalizating.
Explanation:
I can help, but you need to put the questions first :7