Why was World War 2 a terrible war?

Who aided the European powers in the exerting control in the new world? Why is French important? What is The Seneca tribe climate? What does 40 in a bug mean? Why did Louis XIV choose the sun as his symbol? What british admiral defeated napoleon? Choose all that apply. History is the interaction between? What Asian country began seizing German colonies in the pacific during world war 1? Why did the Great War become a world war? Where did Robert Laird Borden die? The phrase White Mans burden in this excerpt refers to the? What does El mundo es mio mean? Why does bismark create a triple alliance? Who were the Aryan race exactly which part of the world did they come from? What were the expectations of the British from the Albany congress in 1754? What treaty formed the EEC? How was society changing in the years following World War 1? Proclamation of neutrality 1793? What are the northern European Plain's resources? What three empires controlled Mesopotamia between 900 BC and 500 BC?