Correct the comma splices

on august 29, 2005, hurricanes swept over the east coast and gulf coast of the united states, many people were left without homes, sadly, many people died as a direct result of the storms. hurricane katrina was the most dangerous of these as it swept over the state of louisiana, in new orleans people were stranded and left without food, water, or power for weeks, even now, many people have not returned to their homes. many celebrities offered their to raise money for people who were displaced by the hurricane, some of them have purchased homes in new orleans, louisiana, and are still asking for for people who have had difficulty rebuilding their lives. hurricane katrina was a powerful lesson in emergency preparedness, many people did not believe the news reports, they did not believe that the storm would over take the levees in new orleans, they believed that the levees would keep them safe.