Artsiom S says:

1)We should understand that monitoring systems are not available everywhere and World Bank should give some grants to the LEDC to reduce the number of victims.
2) Indonesia lies on the border of two plates which are moving in different directions thats why they touch each other and shake the territory of Indonesia.
3)After the eruption there can be a pyroclastic flow of a high temperature which moves downhill and kills everybody.
It can be the main reason for the loss of life and damage to the property.