Who started the fire in Chicago fire?

The Great Chicago Fire of 1871 is often attributed to a cow belonging to Mrs. O'Leary, which allegedly kicked over a lantern, igniting the blaze. However, the exact cause remains unclear, and there are various theories and myths surrounding the origins of the fire. Some historians suggest that it may have started elsewhere or involved multiple factors. Ultimately, the cow story became a popular legend, overshadowing other potential explanations.