Stacked bar chart

A recent article in The Economist discusses the spread and possible future struggle of Amazon and Alibaba. Many countries offer room for growth.

This is an excellent example of a stacked bar chart. It avoids common problems.

The bars sum to 100%, so their heights are uniform and comparison is easy. With only 3 categories, there are not too many labels or tiny bars.

The messages are clear. In India and China, many people are not yet online. In every country except India, a strong majority of people online are shopping there.

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