Cell phone technology developed out of the need to supply wireless communication in war. During the Korean War and later in Vietnam, the U.S. developed new methods of communicating with walkie-talkies. Later, this combined with some of the NASA technology used to communicate with aircraft. By the early 1980's, consumers could use cellular phones (although they were massive beasts that would not last long.)
1. How is this related to either the military or NASA?
2. How would the world be different if this hadn't been invented?
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