In 1857 he installed the first safety elevator for passenger service in Haughwout's store in New York City. His development led to major changes in building design for until the acceptance of elevators, buildings were effectively limited to 10 stories. The first elevators that did not require an operator were introduced in 1927. Cholera Cholera had been endemic in India for centuries but in the 1830s spread all over the world. Although it is practically unknown in the western world now, it was a devastating epidemic for much of the 19th century.
Cholera starts with serious vomiting and diarrhea.
As the body dehydrates it turns black and blue and terrible cramps occur, often leading to death even today. When cholera spread to Europe and North America, the cause was totally unknown. It was noticed quickly that poorer parts of the cities were hit more seriously than the richer areas and some people believed that it was deliberately spread to reduce the population. There were serious revolutions in France, Germany, Italy and Austria in 1848 and one of the causes was the panic resulting from cholera outbreaks. The source of the disease was not found until the 1850s.