jul 2, 1868 - First Elevated Railway Opened In New York
Mass transit: the new dope way of moving coming to a sprawling city near you. Cable cars also started popping up. These things were meant to be remedies to prior transportation problems, such as SO many roads not being paved (like 600/2000 MILES of road paved).
Added to timeline:
Chapters 18-19 Timeline - Jackson Perry