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First sold by IBM. The flash drive would prove to be wonderful to use for mobile storage.
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A new OS for Mac that started making Macs more efficient. making running multiple tabs and applications a little better.
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A major contributor to modern social media. Eventually being passed by Facebook. Undeniably a huge contributor to social networking as we know it today.
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I believe the Wii was a large contributor in the VR scene. Specifically gaming. The interactive controllers was something finally brought to the masses.
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First laptop sold in the mass market with a SSD. Improving the ease of carrying around a laptop by helping reduce the size.