system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How did the United States go from having one of the most advanced and intricate railroad systems in the world to becoming virtually non-existent in the railroad world compared to other places such as Europe and Japan?
gpt
The US still has one of the most advanced and efficient railroad systems in the world...for moving cargo.

Ubiquitous car ownership, well developed highway system, and unfavorable demographics and geography made trains unattractive for passenger use.