it was 9/11 in 2001 September 11.3 airlines crash into the 2 twin building
The Cyclone Mahira in 1899 was the worst natural disaster in Australia.
eastland disaster
Hurricane Katrina was considered the worst natural disaster in US history due to the widespread destruction it caused in New Orleans and along the Gulf Coast. The response to the disaster was criticized for its slow and inadequate efforts in evacuating residents, providing relief, and managing the aftermath, leading to loss of life and prolonged suffering for many affected individuals.
Hurricane Katrina was the costliest U.S. natural disaster, and one of the deadliest. So it ranks as one of the worst U.S. disasters, but probably not the worst.
The shuttle program began with the flight of the columbia, and its worst disaster was the explosion of the challenger.
It depends. The worst disaster can be anything. Like if someone you love dies or your house burns down. It's an opinion.
It is difficult to determine the "worst" natural disaster as each disaster has varied impacts depending on factors like location and population density. Some of the most devastating natural disasters include earthquakes, tsunamis, hurricanes, and volcanic eruptions. The severity of the disaster is typically measured by the loss of life, property damage, and long-term impacts on the affected area.
Chernobyl
The world's worst known nuclear disaster was at Chernobyl, in the Ukraine. The Chernobyl Disaster, as it is called, happened on April 26, 1986. There is a link to a Wikipedia article on this below.
The cast of Spains Worst Rail Disaster - 2013 includes: Sean Pertwee as Narrator
chernobyl?
Since you have used the word "disaster" meaning widespread destruction and distress, I would have to say the terrorist attacks on 9/11 to the World Trade Center would be considered the worst aviation disaster that led to about 2,800 deaths. The worst aviation accident, would be the Tenerife disaster was the worst to 747's ran into each other 03/27/77 there were 583 fatalities.