There were many contributions to the war, but I see imperialism, nationalism and alliances being the biggest, and main contributions to war. The countries involved in the war all believed they were the best, the strongest, and they were willing to prove that through war, helping lead the way to WWI. Along with their Nationalism, the countries were expanding overseas and causing little wars throughout the imperialist countries, essentially leading many countries to dislike one another. And finally, the countries were making alliances, causing the war to become larger, and have more of the World involved in the war. The war was fought over something so small, and many people say that it could likely be avoided, but on the other hand, the war would have come sooner or later because of so many tensions between