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In page Jackson, Mississippi:

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In another major change, in 1990 the state-approved gaming on riverboats.[2] Numerous casinos have been developed on riverboats, mostly in Mississippi Delta towns such as Tunica Resorts, Greenville, and Vicksburg, as well as Biloxi on the Gulf Coast. Before the damage and losses due to Hurricane Katrina in 2005, the state ranked second nationally in gambling revenues[citation needed].