Answer:The Revolution had contradictory effects on slavery. The northern states either abolished the institution outright or adopted gradual emancipation schemes. The Revolution also inspired African-American resistance against slavery. During the Revolution, thousands of slaves obtained their freedom by running away.
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Controlling fire is important because not doing so can cause even more catastrophic damage than has already been done. Take California historically, for example. In the past, they've had millions of acres destroyed by wildfires, and that was while they were being contained. Imagine if they weren't, How much more *could* it have done?
Urbinization is basically citys and buildings which means more people and more money . I hope that answerd your question
By sending spies to the USSR to copy their plans for sputnik