1 jan 1844 ano - Invention of the telegraph

Descrição:

Invented by Samuel F. B. Morse, it was a breakthrough in communications. People hundred of miles away could send and receive messages instantly.
Causes: Joseph Henry was physicist that studied electromagnetism. His work greatly influenced Morse and contributed to the invention of the telegraph.
Historical Impact: It greatly help improve the standard of living with messages now being instantaneous. Thus, it indirectly changed social life forever.