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.
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.
Gfth
An earthquake and the tsunami. It was the 5th worst earthquake in the world. The worst disaster for Japan.
The Cyclone Mahira in 1899 was the worst natural disaster in Australia.
Granville Train Disaster - 18 January 1977, Granville, New South Wales
eastland disaster
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.
Chernobyl, Ukraine, 1986
No such figure will ever be known. Certainly more than half the world will be aware of the disaster.
the sinking of the MV Dona Paz, it collided with an oil tanker, and the Dona Paz caught on fire and it sank in 2 hours it happened on December 20,1987 it was the world's worst peactime maritime disaster, because the tragedy struck with the approach of christmas