$.$ What are the main advantages of bar charts that made them so popular?

What are their main disadvantages?

In the following exercises, draw a bar chart showing the time scale on

the x$-$axis. Use engineering paper or draw light vertical lines every certain interval.

$($e$.$g$.,$ every $5$ days$)$ to help you read the starting and ending dates of any activity.

Make simplifying assumptions whenever necessary. Be sure to mention these assumptions.