Ancient Greeks used smoke signals to send news of the fall of Troy., False , True , Native people in the Americas used parallel columns of smoke to signal a successful return of a war party, False , True , The first email message ever sent was a meaningful sentence., False , True , In the 21st century, the number of email users has grown to over 4 billion, False , True , What is a method of signaling still used in Central Africa today?, Drum talk, Smoke signals, Telegrams, Who is the scientist credited with inventing the modern email system?, Alexander Bell, Ray Tomlinson, Troy Tomlinson, The symbol (@) was used in email to identify, Messages headed to remote computers, The sender's name, The importance of the message.

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