History of bifocals and trifocals
Benjamin Franklin, the early American statesman and inventor, is credited with creating the first multifocal lens for eyeglasses. Prior to Franklin's invention, anyone with presbyopia had to carry two pairs of eyeglasses — one for seeing distant objects and one for seeing up close.
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We gained it from the British.
Answer: Meiji Restoration, in Japanese history, the political revolution in 1868 that brought about the final demise of the Tokugawa shogunate
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