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The radio during the 20th century gave people the opportunity to listen hundreds of miles away to news or music. People relied on the radio mostly because of the wars or any news from family members.

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Before penicillin was even discovered any little bug during or before 1928 was fatal. After penicillin and other antibiotics being discovered the bacterial infections and deaths became rare and reduced.

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During the 20th century rockets were becoming powerful and bigger. This made rockets useful to war for weapons during the time.

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The automobile became reliable for transportation during the 20th century which changed a lot of things. The automobile helped people get mail faster than usual but most importantly goods transportation.

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Initially introduced in 1975, the purpose of this was for individuals to have. By the nineteenth century there were enough elements necessary to make a computer. Some of these elements, mathematical systems, storage, and power.

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Submarines have been evolving throughout the years and have been used for studies and even war. During the 20th century experiments were tested with different material and the way they were shaped. Some were found to be very useful to the military and others for further experiments. As scientist kept experimenting they also had to come across the type of engine needed for the submarine to work. One of the many types was generator the engine ran but although it was a good idea it was risky and flammable causing it to be unstable

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Invented by The Wright Brothers. On December 17, 1903, The Wright brothers had successfully made four brief flights at Kitty Hawk with their first powered aircraft.

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providing 13% of electrical power worldwide- nuclear energy is generated from the splitting of uranium atoms or a process called fission. Heat is generated to produce steam, used my turbine generator to produce electricity.