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.
Which natural event is caused by the blocking of sunlight by the Moon?...
What is the name of the iconic temple in Kyoto, Japan?...
Which type of animal can regrow lost limbs?...
What is the main attraction of the Acropolis in Athens?...
What is the name of the spaceship in the "Star Trek" series?...
Which U.S. President signed the Louisiana Purchase?...
What is the name of the traditional Moroccan tea ceremony?...
What is the currency of Seychelles?...
How do you enable close friends for Instagram Stories?...
What is the process by which plants release oxygen into the air?...