Applications build with Ethereum do not cover all use cases of course, but have specific properties that make them unique: 1  Ethereum applications always execute the code they say they will - there is no 'security through obscurity'. I don't need to 'trust' anything or anyone, because I can check the app code myself. Ethereum applications are always available, and are guaranteed to be available in the future. There is no downtime.
A transatlantic telegraph cable is an undersea cable running under the Atlantic Ocean used for telegraph communications. The first was laid across the floor of the Atlantic from Telegraph Field, Foilhommerum Bay, Valentia Island in western Ireland to Heart's Content in eastern Newfoundland.efore the first transatlantic cable, communications between Europe and the Americas took place only by ship. Sometimes, however, severe winter storms delayed ships for weeks. The transatlantic cable reduced communication time considerably, allowing a message and a response in the same day.
These not only changed the course of the Civil War, but also the face of warfare to this day. Communications and Transport. Telegraph. The telegraph was invented by Samuel Morse in 1844, and telegraph wires soon sprang up all along the East Coast. During the war, 15,000 miles of telegraph cable was laid purely for military purposes. Mobile telegraph wagons reported and received communications from just behind the frontline. President Lincoln would regularly visit the Telegraph Office to get the latest news.