Which of the following statements best describes how urban commuting changed in the late 1800s?
subways and automobiles replaced horse-drawn trolleys.
horse-drawn trolleys replaced elevated trains and subways.
elevated trains and subways replaced horse-drawn trolleys.
automobiles replaced horse-drawn trolleys.

The late 1800s were a time of innovation. Many innovators and companies were springing up and promising customers and cities with the ideas of new types of transportation. One of these was the elevated train and subway. They slowly began to replace horse drawn carriages and were the forerunner of mass transportation.