What were the long range and immediate causes of WWI?

From 1871 to 1814, European great powers such as France, Germany or England, but also other European countries, did not encounter any major wars. Indeed, the only military action was taking place in the non Western world with wars of conquest in Africa for instance. Nevertheless, this long period of peace was not as stable as it may seem: some tensions rose between countries in Western Europe, creating new alliances, and several crises in the Balkans could …

…and the Triple Entente (France, England and Russia) clearly separated Europe in two groups made of powerful countries, which led to an even more destructive world war after new series of crises of the Ottoman Empire in the Balkans. Indeed, we could consider these alliances as the long range cause that led to a world war. Crises in the Balkans happened fast and acted as almost immediate triggers of the war, worsening relations between countries.