The right click function can be used to bring up menus, to give options to open, duplicate, or delete a file, or to customize the view of your Mac desktop.

Mac users can right click in a number of ways, using their keyboard and trackpad in tandem, or by using specific tapping patterns on the trackboard itself.

An external mouse can make right clicking on a Mac even easier.

When the first Apple computer that used a mouse came out, a feature common to PC hardware was conspicuously absent: a right click button.

While today your Macbook Pro or Air will work seamlessly with just about any mouse you connect, for a while, the struggle to right click was real.

When you right click on a Mac's desktop, you'll see the option to create a new folder, change your view settings, and more.

The text above is a summary, you can read full article here.