Smoke signals, the telegraph, satellites, and the Internet are a few of the ways humans have sent messages over long distances. As long-distance communication methods increased in complexity over the years, the speed of delivery and distance traveled usually increased as well.
Yesterday & Today - Long-Distance Communication (Yesterday & Today),Mary Hertz Scarbrough,Blackbirch Press,1567118321,Children's 9-12 - Sociology,Children's Books/Ages 9-12 Nonfiction,Children: Grades 4-6,General,History,History - General,Juvenile Communications,Juvenile Nonfiction,Juvenile literature,Science & Nature - General,Telecommunication,Telecommunications,Juvenile Nonfiction / General
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