I think it was 640 B.C.
hope it helps
They prevented people from leaving China because the desert were so hard to cross.(ANSWER D) Gobi desert was dangerous and dry, water available was little since oasis were rare. The Taklamakan desert has strorms with whip up frequency The day boils hot while the night freeze cold .In addition it has poisonous snake.
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The abolition movement has the least effect on late nineteenth century american industrialization.
The white abolitionist movement in the North was led by social reformers, especially William Lloyd Garrison<span>, founder of the American Anti-Slavery Society; writers such as John Greenleaf Whittier and </span>Harriet Beecher Stowe<span>.</span>