A. Robert Fulton
B. Nikola Tesla
C. Martin Cooper
D. John Harrison
Submitted by: Munwar Ali Sohu
Correct Answer: John Harrison ✔
Last Updated: October 25, 2019
A. Robert Fulton
B. Nikola Tesla
C. Martin Cooper
D. John Harrison
Submitted by: Munwar Ali Sohu
Correct Answer: John Harrison ✔
Last Updated: October 25, 2019