Who invented the electric telegraph and Morse code?

• A. Samuel Morse
• B. Guglielmo Marconi
• C. Nikola Tesla
• D. Alexander Popov

Answer: (A)

The concept here is about who created the practical system that could send messages over long distances using electricity, and the coded alphabet used to read those messages. Samuel Morse, with his collaborator Alfred Vail, developed the electric telegraph in the 1830s–1840s and coined the Morse code, a simple dot-and-dash encoding that translated letters into signals for transmission. This pairing—a working telegraph machine plus a standardized code—made rapid, long-distance messaging feasible and gave us the name Morse code. The other figures are famous for related but different achievements: Marconi is celebrated for wireless radio, Tesla for broader electric power and wireless ideas, and Popov for early wireless signal experiments. Because of the direct link to both the practical telegraph and the coded system that carries messages, Samuel Morse is the best answer.