Answer:
a) Inventor
It was invented by David Alter.
b) What is it?
It is a system for transmitting messages from a distance along a wire, especially one creating signals by making and breaking an electrical connection.
c) What was an impact?
The invention of the telegraph did make the world a lot smaller. It help send information across the country faster than any vehicle. The government also used the invention for military purposes too. The government used this to send information and secret messages to other cities such as the capital during wars.