Watch Trains: Two Centuries of Innovation (2017) Official Trailer

Nearly 200 years ago, the train revolutionized our lives. It redrew the maps of states and nations, and changed concepts of distance and time like no other invention before. What visionaries imagined the development of the railroad? How did we get from the first chugging locomotives to the smooth giants of speed we see today? How does France's extensive rail network keep running smoothly, 24/7?