During the American Colonial period, "street vendors sold oysters, roasted corn ears, fruit, and sweets at low prices to all classes." Oysters, in particular, were a cheap and popular street food until around 1910 when overfishing and pollution caused prices to rise. Street vendors in New York City faced a lot of opposition. After previous restrictions had limited their operating hours, street food vendors were completely banned in New York City by 1707. Many women of African descent made their living selling street foods in America in the 18th and 19th centuries, with products ranging from fruit, cakes, and nuts in Savannah, to coffee, biscuits, pralines, and other sweets in New Orleans. Cracker Jack started as one of many street food exhibits at the Columbian Exposition.