Principle purpose of this lecture is to present on America’s Great Disasters. Many terrible things have happened to America and her citizens. Floods, Hurricanes, Fires, Blizzards, Explosions, Diseases. Causes death, injuries, loss of homes, money, jobs, communities, friendships. But many good things arise too! Safety laws, sense of community & accomplishment, new inventions/technology. Here briefly describe on Sultana Explosion; General Slocum Disaster, Great Johnstown Flood, Great Drought, Galveston Hurricane etc.