South Korea has the fastest average internet connection speed in the world.
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A standard AA battery is enough to power a Wi-Fi router for about 5 hours.
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The sewing machine sped up clothing production.
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The first computer mouse was made of wood — Douglas Engelbart built it in 1964.
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The telegraph enabled rapid long-distance messaging.
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3D printing (additive manufacturing) was invented in the 1980s — early machines cost hundreds of thousands of dollars.
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The refrigerator allowed long-term food storage.
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The first product to have a barcode scanned at retail was a pack of Wrigley's chewing gum in 1974.
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The internet connected computers across the world.
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