The United States airforce became 1... that if the country was attacked with atom bombs it would not be able to 2... all its ships, bombers and missiles. They asked Paul Baran at the Rand research institute to find a 3... He came up with a design which sent information in small 'packets' which could find their own way to the computer that needed them. If part of the route was 4..., the packet would find another way.

 

As the internet became more user-friendly, and computers became more 5..., people began to think 6... putting a graphical user interface (GUI) on the internet. The first of these programs was developed by Marc Andreessen, who worked with several different academic institutions to 7... a program called Mosaic. (Mosaic was the ancestor of Netscape, which was the source of Firefox, a browser which is very 8... today.)