It's interesting how many more trees there are in 2013. My wife pointed out that it looks the same with pictures of New York from the early 20th century- green space just wasn't a thing we had the desire/means to rate as highly. OTOH the major infrastructure hasn't changed much (bridges, urban areas, not just the train line which is politically determined). Technological change reshapes how live in a lot of ways in s…
I thought there might have been fewer trees in the earliest video, but it was really difficult to tell with the film quality and the speed of things rushing by. If the rail was newly laid in the 50s, then they might have had to cut down the trees, and they take a while to come back. The difference that jumped out at me the most is the decline in hats. I wonder how many haberdashers were put out of work during this pe…
It wasn't. The first London to Brighton railway line opened in 1841. Most of sections of the two main paths from Brighton to London (to London Victoria and London Bridge respectively) should have been complete by about 1855. There was expansion work (adding extra tracks) on the busiest section of the line around 1908, but I think that was the last major work on the London-Brighton lines apart from connecting branches.
There's of course been replacements and upgrades, but these tends to happen bit by bit.