Final answer:
The main causes of World War 1 were militarism, alliances, imperialism, and nationalism. The alliance system contributed most significantly to the outbreak of the war. In the future, nationalism could still be a factor that leads to wars.
Step-by-step explanation:
Main Causes of World War 1:
- Militarism - the belief in the importance of a strong military and the willingness to use it to achieve national goals.
- Alliances - the formation of defensive agreements between countries to support each other in case of attack.
- Imperialism - the competition between nations for colonies and resources around the world.
- Nationalism - the intense pride and loyalty to one's own nation, often leading to hostility towards other nations.
The cause that contributed most significantly to the outbreak of World War 1 was the alliance system. The complex network of alliances created a web of interdependence between countries, whereby a conflict between two nations could quickly escalate into a full-scale war involving multiple countries.
In terms of future wars, one cause that could likely lead to a war is nationalism. The intense pride and loyalty to one's own nation can create hostility and conflict with other nations, especially when combined with other factors such as territorial disputes or resource competition.
Learn more about Causes of World War 1