Complex sentence: Hurricane Camille in 1969 and Hurricane Katrina in 2005, which killed 238 people in the state, were the most devastating hurricanes to hit the state, both causing nearly total storm surge destruction around Gulfport, Biloxi, and Pascagoula.
Split into simpler sentences: Hurricane Camille in 1969 and Hurricane Katrina in 2005, which killed 238 people in the state, were the most devastating hurricanes to hit the state. Both caused nearly total storm surge destruction of structures in and around Gulfport, Biloxi, and Pascagoula.