On August 4, 1914, Britain declared war on Germany and entered the First World War. This was a conflict of unparalleled savagery with industrialized slaughter on a scale that the world had never seen before. To commemorate this important anniversary Dan guides us through what led Europe and the world to choose war in 1914. He explores some of the many different reasons for war from the miscalculations and misguided beliefs of European leaders to the structural causes such as the role of capitalism and imperialism that helped bring about the conflict. As well as unpacking the causes of the war he also looks at its consequences which we are still living with today.