Final answer:
Imperialism, militarism, and alliances were the main related causes of World War 1.
Step-by-step explanation:
The main causes of World War 1 were related to imperialism, militarism, and the formation of alliances among different nations. Imperialism, which refers to the expansion of empires and the acquisition of colonies, created competition and tension between powerful nations. Militarism, the glorification of military power and the build-up of armed forces, intensified the arms race and heightened tensions. Finally, the formation of alliances, such as the Triple Entente and the Central Powers, created a complex system of interlocking agreements that turned a localized conflict into a global war.
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