There was trails all across The U.S. There was also coming from the other side of the world. lolz. And also walking I guess.
The immediate cause of World War I that made the aforementioned items come into play (alliances, imperialism, militarism, nationalism) was the assassination of Archduke Franz Ferdinand of Austria-Hungary. In June 1914, a Serbian-nationalist terrorist group called the Black Hand sent groups to assassinate the Archduke. Hope this helps, plus this was the main reason why it happened plus if you see a link other people offer for the answer don’t put it in the web, I tested it out I got a virus. Anyways hope this helps!
The reconstruction of the south made it easier for certain people to travel,work, and live from the rebuilding or railroads and/or buildings
