The War of Currents between electric companies in the late 19th century and early 20th century not only divided the world between AC (Alternative Current) and DC (Direct Current), but also into different voltage configurations. So, while most countries around the world, including nations in Europe, Africa, Asia and Australia, adopted 220-240V, most of the Americas (US, Mexico, Canada and Brazil) as well as Japan settled for 100-127V as the standard voltage.

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