In the coming of the First World War (1914), Serbia historians often say that Serbia was a client state of Russia, and that is what caused Russia to defend Serbia against Austria, which led to the start of the First World War.
That Serbia was a client state of Russia. This is what Serbia historians say in the coming of the First World War (1914). That is what caused Russia to defend Serbia against Austria. This is what Serbia historians say in the coming of the First World War (1914). Austria led to the start of the First World War.