Caused by humans.unawareness , carelessly handling of dangerous chemicals, explosion,weapons, Nuclear power plant and nuclear blast, Radiological emergencies , etc  are the causes for the man made disaster...

hope its help u..
2 5 2
Causes of Man Made disaster are ;-

Literacy plays a major role in the society but because of illiteracy which leads to causes of man made disaster.

Due to Unawarness among people can  also be a cause of disaster. They do not know the causes of man made disaster such as global warming , etc.

⇒ Due to wars is also one of the cause of man made disaster.

Using of weapons without any care or using of hazaradous chemicals is also one of the cause.