Why are some volcanic eruptions (like mt. st. helens) more explosive than others (like hawaiian volcanoes)?

What is the theme of "the story of the fisherman"?

In the scramble for africa, european powers drew boundaries and created states that benefitted the colonizers while ignoring the needs of the local populations. what effects did this policy have on the indigenous people following independence?

What three colors are on the rwandan flag that was adopted in 2001