history help?
回答 (2)
2006-11-12 6:55 pm
✔ 最佳答案
The north and south began to accept each other and began to interact. New inventions like the cotton gin and printing press became more widespread and popular because everyone was able to use it.
2006-11-13 2:54 am
Industrial revolution began and people began to live in cities to work in factories.
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