How does the internet transmit data across the world?

The internet sends messages all around the world like letters in a postal system.

Imagine you have a favorite toy that you want to send to your friend who lives far away. You write a note about the toy, put it inside an envelope, and drop it into a mailbox. A letter carrier picks it up, takes it on a truck or train, and eventually delivers it to your friend’s mailbox. That's how messages travel through the internet, but instead of letters, we send data, and instead of mail carriers, we have computers acting like smart helpers.

Data is like small pieces of information that can be sent one after another, just like cars in a traffic jam. Each piece has a special address so it knows where to go. These tiny messages travel through wires or the air using signals, kind of like how your phone sends sounds across a distance when you talk to someone far away.

When your computer wants to send something, it breaks the message into little parts and sends them one by one. Each part goes through many hops (like changing trains) until it reaches its final destination. Then your friend’s computer puts all the pieces back together so they can read or see the full message!