The European map just shows railway lines, which are partly not used for passenger trains. I believe this one is better, although from 2017 so things might have changed for some lines:

The European map just shows railway lines, which are partly not used for passenger trains. I believe this one is better, although from 2017 so things might have changed for some lines:

The US map is also incomplete iirc from the last time I saw this image.
Also, population density in the US vs. Europe:

Please use a blur attribute as this is too sexy especially the bottom half.
United States are decades behind.
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