A rail network consists of the track itself, locomotives, and then you have the rail cars themselves. What's really interesting is the history here when you talk about why it's ange to build rail tract to day,. A lot of it has to deal with most of the land now around the us. That's a really helpful run through thehistory. This feel like so much the impol structure that we rely on to day, that was built a long time ago.

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