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Dual-Voltage Selector would be needed on a computer if you want to take it with you on vacation to another continent.
A continent is one of all of Earth's seven primary divisions of land. The continents are, from biggest to smallest: Asia, Africa, North us, South the united states, Antarctica, Europe, and Australia.
By way of maximum requirements, there is a maximum of seven continents - Africa, Antarctica, Asia, Australia/Oceania, Europe, North America, and South united states. Many geographers and scientists now refer to six continents, wherein Europe and Asia are blended (because they're one strong landmass).
From the 16th century, the English noun continent became derived from the term continent land, which means continuous or linked land and translated from the Latin terra continens. The noun became used to intend "a related or continuous tract of land" or mainland.
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