What helped cause the First World War?


the opening of the Suez and Panama Canals


nationalism and military alliances


tensions between Great Britain and France


new inventions and economic freedom

Respuesta :

Answer: nationalism and military alliances

Explanation: The immediate cause of World War I was alliances, imperialism, militarism, and nationalism. The assassination of Archduke Franz Ferdinand of Austria-Hungary led to Austria-Hungary declaring war on Serbia.