What major event caused over $200 million in damage and rendered 90,000 people homeless?

The major event that caused over $200 million in damage and rendered 90,000 people homeless is the Great Chicago Fire. This catastrophic event occurred in October 1871 and is one of the most significant fires in American history. It led to widespread destruction, with approximately three miles of the city's downtown area devastated and much of the city’s infrastructure lost. The fire resulted in the deaths of an estimated 300 people and left a significant portion of the population homeless.

The other events listed, while tragic in their own right, did not reach the same economic toll or widespread impact as the Great Chicago Fire. The Triangle Shirtwaist Factory fire and the New York City Fire of 1911 were significant in terms of loss of life and highlighted important labor and safety issues, but they did not match the scale of financial damage or displacement caused by the Great Chicago Fire. The Boston Fire of 1679, though destructive, also did not have the same far-reaching consequences in terms of damage and homelessness as the fire in Chicago.