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Answer:
Because of the great advantages of the North in the civil war
Answer:
Deep sleep reduces the likelihood someone will have a nightmare.
Explanation:
In simple words, all other points except the last statement are scientifically proves facts of what are some major requirements to get a proper sleep. In history, the cavemen had issues with hunting in darkness so they decided to wait until the day which ultimately led to long sleeps for them.
Also, sleep is essential for the body and brain as it heals the damaged neurons and also relaxes the muscles all over the body.
The US didn't open a trade route until after the Revolutionary War because if they did then they wouldn't have a relationship between China and the US.