Answer:
The Underground Railroad was a network of people, African American as well as white, offering shelter and aid to escaped enslaved people from the South. It developed as a convergence of several different clandestine efforts.
Explanation:
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Answer: A.
Explanation: The option A is: Over the course of the eighteenth century, the average output of ironwork tripled as a result of several improvements in blowing machinery and because coal replaced charcoal as the fuel used in the smelting of iron ore.
This is the perfect answer to why was the output tripled.
The answer is 1 and 2. 1 was passed in 1804 and 2 was passed in 1803. The rest were all passed before 1800.