Hey...I think I remember answering one of your old questions LOL...*Think So*
But one of thier impact was strong food shortages
The number of deaths within a society are measured and referred to as Mortality rate. This measures the number of deaths in a given period of time and geographical area. Within mortality rates more specifical sub-genres of the rate might be observed, such as Infant Mortality rate, Maternal Mortality rate, etc.
Mountains adversley affect the farming conditions