[Svip]

With the invention of steam ships, railways, aeroplanes and the automobile; travel became almost trivial. In conjunction with those inventions, states also became a lot more involved in people's lives; culminating in large welfare states. 3-4 centuries ago, a state did not care much about who lived in in their territory; these days, they are likely to provide them benefits, and have certain obligations according to international treaties about how to treat people within their own borders. These state operations, along with obligations, makes states care a great deal about who enters or leave their territory.

[BeFlatXIII]

Thank you for speaking truth about the railroad (and superhighway) problem.