USA HISTORY

Detailed explanation-1: -telegraph, any device or system that allows the transmission of information by coded signal over distance.

Detailed explanation-2: -In 1867, the telegraph connected America to Europe using a cable on the oor of the Atlantic Ocean. From there, it spread to the rest of the world, providing the entire world with a means to communicate that required minutes rather than months to deliver a message.

Detailed explanation-3: -A brief historical overview: The printing press was the big innovation in communications until the telegraph was developed. Printing remained the key format for mass messages for years afterward, but the telegraph allowed instant communication over vast distances for the first time in human history.

Detailed explanation-4: -The telegraph helped western expansion by providing a way for people, businesses, and the government to communicate across long distances.

Detailed explanation-5: -Alexander Graham Bell, best known for his invention of the telephone, revolutionized communication as we know it. His interest in sound technology was deep-rooted and personal, as both his wife and mother were deaf.