A. Department of homeland security
Back in the 1700's the slave trade was almost as popular as the production of smartphones today. Every one wanted a servant so the economy grew. when it was proposed to abolish slavery, many did not want it to go because they were afraid that the economey would drop.
Explanation:
Here r the things thet upset the ecological balance
1 Deforestation
2Over population
3 Burning of fossil fuel
4 pollution
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George Washington because he was the first president of the United States.