Causes of WW1:
- Nationalism : Serbia’s growing strength threatened Austria-Hungary’s control of its territories in the Balkans. This encouraged the Slavs to push for independence.
- Militarism : Germany had a longtime ally in Austria. France’s 1892 alliance with Russia threatened to surround Germany with enemies. Eventually, Italy joined Austria-Hungary and Germany in one alliance, and Great Britain joined France and Russia in another. The alliances avoided war for a time but created the risk that a single incident could trigger a major war.
- Assassination- June 1914- Archduke Franz Ferdinand was shot and killed by Serbian nationalist Gavrilo Princip
- Austria-Hungary almost immediately declared war on Serbia. Germany immediately offered its support. Russia was compelled to honor its alliance with Serbia. The alliance system soon turned a local conflict into a global war. The Allied Powers of Britain, France, and Russia were pitted against the Central Powers of Germany, Austria-Hungary, the Ottoman Empire, and Bulgaria.