....and the point relative to the topic

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Nickolas could have avoided the conflict. However, governments of poor nations or nations with loads of miserable people have historically seen war as a short term solution. U.S. did it to get out of the depression and Nickolas saw a war as a means to get the masses of oppressed back on a nationalistic track. So, he actually seems to have invited the opportunity for war and it backfired.
Germany had no such motive. Their population was growing by leaps and bounds, affluence in the middle class was historical. Germans were happy and content and very pleased with the status quo.
What could have happend, but obviously did not, was what is happening today. Had Nickolas not desired a war to divert homeland attention, German businesses would have very likely set their sites on the vast opportunities in Russia. Already, Germany had built the Baghdad/Berlin and Tehran/Berlin railways and Russia was prime for development. Industrial development would have not only jump started a vastly improved life for Russias millions, but would have avoided WWI and set the stage for a very different and less tragic 20th century. The monarchies would have fallen sooner of later, but likely with less misery and bloodshed.