History - 20th CENTURY STUFF: When Marconi transmitted the letter "S" across the Atlantic in 1901, it was in this form

0 / 60 seg.

20th CENTURY STUFF: When Marconi transmitted the letter "S" across the Atlantic in 1901, it was in this form

Question: 1 / 31162 - Correct: 0 - Streak: ☆☆☆☆☆

Previous question