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The revolver helped soldiers fend off advancing opponents much quicker and more efficiently.

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The vulcanization of rubber made it so that rubber could withstand hot and cold temperatures.

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The saxophone was made because Adolph Sax wanted to create and instrument that combined the best qualities of woodwind instruments and brass instruments into one.

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Anesthesia was first made to prevent pain during surgeries. Long first used anesthesia when removing a tumor from a patients neck.

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Nancy Johnson made the ice cream maker to make it possible for people to make their own quality ice cream by theirselves.

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Rubber bands were made to hold papers and envelopes together. The first rubber bands were made of vulcanized rubber.

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The revolving machine gun was made so that one person could do more with only one gun. This was to reduce the need for so many people in the Army.

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The air brake rail was made because previous braking systems on trains were faulty and dangerous, this invention made braking a train much safer and easier.