A: streets were often too narrow for heavy traffic, streets did not have paved roads, paving could not keep up with the people in the expanding cities, needed mass transportation, streetcars drawn on tracks by horses were not fast enough
NYC made the first elevated railway in 1870 and then the Brooklyn Bridge in 1880s
great fear was fires. Fires destroyed major cities because buildings were still made of wood. They were important events in the development of cities. They encouraged fireproof buildings and professional fire departments.
even greater fear than fire was disease. Improper sewage disposal and water contamination caused epidemic diseases
exposed the trouble single women have moving from the countryside to the city without any means for support
in reality, many women were moving to cities and living in conditions of extreme poverty and hardship, so some moved into prostitution - degrading and dangerous, but it produced a livelihood and form of community for desperate people