The Causes of World War One

In the immediate view, it seems that there are two main arguments attributed to the origins of the First World War. One is that the war was planned, the other that it occurred due to accident and miscalculation. I aim to give a detailed analysis of these two arguments with the focus being on the main European powers at the time - Germany, Great Britain, France and Russia.
It is my view that the First World War was effectively planned, all be it for a later date, and that due to some miscalculations, it was then brought forward so that war would break out in Europe in August 1914. Using sources from various historians, I will argue this point of a planned war blaming it almost solely on the part of the German Empire and bringing in the other side of the argument, that the First World War was the result of accident and miscalculation.
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