Who Invented the Pen?

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Who Invented the Distance Formula?

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Who Invented School?

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Who Invented the Scientific Method?

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Who Invented the Pythagorean Theorem?

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Who Invented the Piano?

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Who Invented Algebra?

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Who Invented String Art?

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Who Invented Numbers?

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Who Invented the Pencil?

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Who Invented the Pencil Sharpener?

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Who Invented the Spiral Notebook?

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Who Invented Astrology?

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Who Invented the Chalkboard?

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Who Invented the Quadratic Formula?

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Who Invented Pi?

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Who Invented Boolean Logic?

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Who Invented Chalk?

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