Radio
Morse code and the telegraph
Telephone
Printing press
Microscope
Correct answer is B
Samuel Morse invented Morse code and the single-wire telegraph system.
How do you schedule a community post on YouTube?...
Who wrote the Communist Manifesto?...
Which U.S. state is home to Yellowstone National Park?...
How do you send a Snap to multiple people at once?...
Which animal is the only flying mammal?...
How do you set up TikTok’s auto-captions?...
Which Formula 1 team has won the most Constructors' Championships?...
How do you customize WhatsApp’s vibration pattern for notifications?...
Which political ideology advocates for a classless society?...
Which medical tool is used to hold tissues during surgery?...