History of Communication and Transportation

Early humans used (a)   and gestures to communicate.

People drew pictures called (a)   on cave walls.

The invention of (a)   made it possible to write down information.

Ancient Egyptians used a type of paper called (a)   .

Messengers on (a)   were used to carry important news long distances.

The invention of the (a)   in the 1400s helped spread information quickly.

(a)   is a system of sending messages using flashes of light.

The (a)   was invented by Samuel Morse and used electrical signals to send messages.

The code used with the telegraph was called (a)   code.

Alexander Graham Bell invented the (a)   which allowed people to talk to each other over long distances.