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The last country in the Americas to emancipate slaves was the United States,in 1865.
Shield Volcano
A shield volcano is a type of volcano with broad, gently sloping sides and nearly circular base, formed by the eruption of low-viscosity lava that can flow a great distance from the vent.
Scoria Cone
A small volcanic cone made up of basaltic lava fragments and ash, typically created during explosive eruptions.
Caldera
A vast volcanic hollow created by a significant explosion that results in the collapse of the volcano's opening.
Pyroclastic Deposits
Accumulations of volcanic materials, such as ash, tephra, and lava bombs, ejected explosively from a volcano.
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