The major fire occurred in the Chicago in 1871 because of persistent high-pressure zones that prevented moisture-laden winds from the Gulf of Mexico reaching the area.
The Great Chicago Fire was a blaze that raged in Chicago, Illinois, in the United States, between October 8 and 10, 1871. Over 17,000 buildings and about 3.3 square miles (9 km2) of the city were destroyed by the fire, which also left about 300 people dead and more than 100,000 people homeless. [3] Southwest of the city's center, a neighborhood caught fire. The city's predominately wooden construction, coupled with a protracted period of hot, dry weather, contributed to the fire. The fire first jumped the Chicago River's south branch, destroying much of central Chicago, before jumping the river's main branch and destroying the Near North Side.
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