Question

people suffer from a trauma after natural calamity give reason for the following

Answer 1

Hi
Like many causes of trauma, natural disasters can be sudden and overwhelming. The most immediate and typical reaction to a calamity is shock, which at first manifests as numbness or denial. Quickly—or eventually—shock can give way to an overemotional state that often includes high levels of anxiety, guilt or depression.
Hope you understand

Answer 2

People suffer from a trauma after natural calamity because, as well know natural calamity brings disasters. People who are the victims of that calamity end up losing everything with nothing in their hand and no hope they go in to trauma.