Because at that time there was only one browser and that was only IE which had the complete monopoly on the market. If go beyond in the history we can see that this was only a Mozilla Firefox browser which challenges the Kingdome of Internet Explorer.
After every few intervals Mozilla Firefox update automatically. When you use this browser first of you will experience its beautiful interface which also too convenient to use.it supports add-ons, besides this, you can experience that this internet browser takes very less time in processing when you type something in the search bar. It has got many latest features which makes this Browser unique.
