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Answer:
In statistics, correlation is the general direction and stregth of the collectiveness of the points (general trend) relative to another output of sets.
Causation is an effect caused by an action, correlation doesnt always equal causation.
Answer:
The 19th century
Explanation:
The late 19th-century United States is probably best known for the vast expansion of its industrial plant and output. At the heart of these huge increases was the mass production of goods by machines. This process was first introduced and perfected by British textile manufacturers.
Answer:
Firstly, what plague? Are we talking about the Bubonic plague?
Explanation:
1) By rats, Which served as the vector which spread the disease.
2) Lack of hygiene and them throwing their sewage and was out of their window into the street.