Answer:
The answer is A Gantt Chart.
Step-by-step explanation:
Gantt Chart is named after its inventor, Henry gantt who first used it around 1900's. The chart is a vertical bar chart that effectively illustrate the project schedules and how the project should progress.
Modern project management softwares have evolved to be so advance that they even allow to schedule people, reasources, client requirements and etc.. with a click of a button.