The signal was weak. An attempt at fixing the problem, boosting the voltage, caused the insulation to fail. Later cables added repeaters along the way to mainta

The signal was weak. An attempt at fixing the problem, boosting the voltage, caused the insulation to fail. Later cables added repeaters along the way to maintain the signal. https://en.wikipedia.org/wiki/Transatlantic_telegraph_cable#First_contact https://en.wikipedia.org/wiki/Transatlantic_telegraph_cable#...