Marconi was the Nobel Prize-winning Italian creator of the radio telegraph system. At 21, while experimenting with a homemade apparatus, he successfully sent signals across a distance of more than a mile and set off to London with his mother to find support for his work. He patented his system, organized a company to develop its commercial applications, and, in 1901, transmitted the first transatlantic wireless signal. During what disaster did his invention play a key role in saving lives? Discuss