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Inventor: Thomas Adams
Purpose: The purpose of chewing gum in 1870 was used for a rubber substitute.

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Inventor: Levi Strauss
Purpose: The purpose of Jeans in 1873 was to make a stronger work pant for workers.

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Inventor: Alexander Graham Bell
Purpose: The purpose of telephones in 1876 was to transmit vocal or other sounds telegraphically.

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Inventor: Thomas Edison
Purpose: The purpose of the light bulb in 1880 was to allow an electric lamp to be reliable, safe, and practical.

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Inventor: Karl Benz
Purpose: The purpose of the automobile in 1885 was a self-propelled vehicle for carrying people.

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Inventor: John Loud
Purpose: The purpose of the ballpoint pen in 1888 was an inked pen that would be able to write on rougher materials such as wood, leather, and even paper.

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Inventor: Whitcomb L. Judson
Purpose: The purpose of the zipper in 1890 was to have an easier way of opening and closing boots and tobacco patches.

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Inventor: Frederic E. Ives
Purpose: The purpose of color photography in 1892 was to help draw attention to their subject that they wanted highlighted.