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An extraneous variable is:
Fishing Trade
The industry or business of catching, processing, and selling fish and seafood.
European Crop Failures
Periods when agricultural production in Europe significantly declined due to natural conditions, affecting food supplies and economies.
Lucrative
Refers to a venture or activity that is highly profitable.
Slave Trade
The historical practice of trading in enslaved people, particularly prevalent across the Atlantic Ocean from the 16th to the 19th centuries.
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