Bar Charts are good at demonstrating changes in a discrete value that depends of another value, discrete (e.g. region, person, store, etc.) or continuous (a period of time). In these charts, the X-Axis holds the categories as always, but it it rotated and becomes vertical, while the Y-Axis responsible for the values becomes horizontal. A three-dimensions series has a depth which means nothing to the chart sense, as it is a visual setting that affects only the chart's appearance.
This Chart has four series displaying the difference between profit from top-three cosmetic products sold in four regions: Florida, Texas, Arizona and Nevada. There are only three categories as only three products sales were analyzed. The range of the Y-Axis values lays between 0 and $12000; the maximum profit value is $9256 got in Nevada by lipstick sales, and the minimum is $3094 (nail polish sales in Texas). The major grid in the chart is enabled, separating the series values by the product sold. The legend is enabled, so you can easily manage the series and enable/disable any of them if necessary.