Typically, on the left, the chart displays a list of the activities with a suitable time scale.
In a nutshell, a Gantt chart is a chart used in project management, as a way of showing activities, such as tasks or events displayed, against time. According to, the very first Gantt chart was created in the mid-1890s by Karol Adamiecki, a Polish engineer who ran a steelworks in southern Poland and was a management ideas and techniques enthusiast.