There are two types of disasters : man made , natural . 
man made disasters can be controlled by taking some necessary steps.but we can't control natural disasters. it is purely in our hands to control man made disasters.
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Man made disaster s Are definitely the result of jealousy and hatred among 2 countries fo each other, this jealously is probably because we want to be the the most poewrful and if we see smone else excelling, we ruin them, instead of working together.
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