What caused Mount St. Helens to erupt?

In 1980, the pressure below the dome of Mount Saint Helens started increasing, manifesting itself in the form of earthquakes. The pressure got to such a point it needed to be released somehow and the volcano erupted in one of the deadliest eruptions in United States history. More.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.