Google plus is the second most popular website in the world. Unlike Facebook , Google yet not add any advertisement on this site. Users won't be destructed by annoying advertisement.This not permanent , they may add advertisement in future.
One of the most annoying part is Hangout History , You can see these history in the right side of your Google plus page. Unfortunately we can't delete all history but we can remove individual or person to person.This post featuring about Google hangout " How to delete Google hangout history ".
1. Open your Google plus page.
In this way , you can delete all of your History , Currently there is no way to remove all history in a single click.