Google has rolled out a new page that shows a searchable history of pretty much everything you do online, including previously visited websites, voice searches, searched things and places, watched Netflix programs, and all activities you did on each of its products. By opting in, you will let Google use all of the information related to your account across services including Search, Chrome, and YouTube, to offer better ads for you across the Web. The feature also offers you an option to delete items as well everything in a particular date range or by specific topics.
Source: https://thehackernews.com/2016/06/google-my-activity.html