A volcanic eruption can lead to a lot of death to everything and once hit it is a very sudden death and the lava with eventually turn to rock and you will be a statue after a while because you are preserved under the hard lava...
it can create islands or destroy plants and people and buildings etc.
Polution maybe?
There has never been an instance where a volcanic eruption has been prevented from occurring by human means.
The deadliest volcanic eruption in history was in 1815 in Tambora, Indonesia. 92000 people died as a result of starvation because of this eruption.
Three people died in the Lassen Peak volcanic eruption in 1915. They were suffocated by toxic gases and ash during the eruption.
Tell them to run...
people die
Billions of people every day manage to struggle through not being in a volcanic eruption. I think you'll get by somehow.
We do not know how to stop earthquakes or volcanic eruptions.
Sometimes a volcanic eruption is not that bad but sometimes it can be very bad. For example, people could die because of it and houses can be destroyed.
They will probably die
change climate.