Answer Description
Windows 8 and later Windows 10 both come with multi-monitor task-bar support in the OS. The task bar in Windows is the GUI component typically at the bottom of the screen that shows the Windows start menu button, shortcuts, open programs & system tray.
Wikipedia
A taskbar is an element of a graphical user interface which has various purposes. It typically shows which programs are currently running.
The specific design and layout of the taskbar varies between individual operating systems, but generally assumes the form of a long strip along one edge of the screen. On this strip are various icons which correspond to the windows open within a program. Clicking these icons allow the user to easily switch between programs …
Taskbar - Wikipedia, the free encyclopedia