Understanding the Causes of World War I in IB History
In IB History, World War I (1914–1918) is one of the most studied global conflicts, marking the breakdown of 19th-century European diplomacy and the rise of modern warfare.
IB students must not only identify the main causes but also evaluate their relative importance, distinguishing between long-term, short-term, and immediate factors. This topic is central to Paper 2 (Causes and Effects of 20th-Century Wars) and connects directly to international relations and global politics.
The MAIN Causes of World War I | IB History Acronym Breakdown
Historians often summarize the long-term causes of World War I with the acronym M.A.I.N. — Militarism, Alliances, Imperialism, and Nationalism.
1. Militarism
- European powers built massive armies and navies, fueled by industrial advances and nationalism.
- Arms race: Germany and Britain competed in naval construction, especially dreadnoughts.
- Military values dominated government thinking, increasing the likelihood of conflict.
2. Alliances
- Triple Alliance (Germany, Austria-Hungary, Italy) and Triple Entente (Britain, France, Russia) divided Europe into opposing camps.
- Alliances intended for security instead created rigidity — one nation’s conflict could quickly escalate into continental war.
3. Imperialism
- Competition for colonies and global dominance heightened rivalries, particularly between Britain, France, and Germany.
- Crises such as the exposed growing tensions and mistrust.
