The answer is global warming
In the early 19th century capturing merchant ships as prizes of war was the primary purpose of Privateers navy vessels.
<h3>What is
Privateers navy vessels?</h3>
Privateers are furnished vessels that are possessed, prepared and officered by at least one confidential people, however cruising under a commission, as a rule called letters of marque, from a combative state, which engages the individual or people to whom it is conceded to assault and seize, adrift, vessels or other property of its foe. East Indiaman Kent (left) fighting Confiance, a privateer vessel told by French corsair Robert Surcouf in October 1800, as portrayed in a composition by Ambroise Louis Granera. A privateer is a confidential individual or boat that takes part in oceanic fighting under a commission of war.
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I guess I would say b or d. Because concluded results change over time with better technology and some solutions dont work.
Answer:
Explanation: thank you!!!