How can I Erase browsing history on I pad mini?

If you are using Safari as your browser

go to Settings,

Look for Safari,

Scroll down and

Select Clear History and Website Data

In future you could also enable private browsing

Turn Private Browsing on or off on your iPhone, iPad, or iPod touch - Apple Support

Hi. Tap Settings icon. Scroll down and find Safari. Click on it.

You'll see the option to Clear History. Select this option..

You'll be asked to confirm. This will clear your browsing history