Wikipedia: Web browsing history
Web browsing history refers to the list of web pages a user
has visited, as well as associated data such as page title
and time of visit. It is usually stored locally by web
browsers in order to provide the user with a history list to
go back to previously visited pages. It can reflect the
user's interests, needs, and browsing habits.
A cookie is simply a small file that a web site places on
your computer to store information. The process itself is
totally benign, and can even be helpful-cookies do useful
things like store your shopping cart information between
sessions, save you from the hassle of logging into a site
every time you open and close your browser, and other
helpful time savers.
The ones that give cookies a bad name track users without
their explicit knowledge and help advertisers (or other
entities) build profiles of users. Many people want to limit
the amount of information that is gathered about them, and
do so by limiting the kind of cookies that their browser
accepts and retains.
Regularly Delete History And Website Data (includes cookies)
Removing cookies and more. Wipe your computer of your
browsing history, cookies, and other detritus. It won't
solve the problem on its own, but it is almost essential to
clear away the tools people can use to track you.
On Mac: Safari > Clear History...
On iPhone & iPad: Settings > Safari > Clear History and Website Data
Android: Manage & delete your Search history
Don't know how to delete history and website data on your
browser? Just go to a search engine like DuckDuckGo and
type, "How do I delete history and website data on Firefox
(Chrome, or whatever)?"