(I THINK about 80% on this one) National loyalties became more important then the concerns of the people. but possibly competition for resources became more intense among some European nations. both of these are true.
nationalism,militarism and imperialism
Imperialism
because of industrialization
militarism, imperialism, alliances, nationalism
Militarism Alliances Imperialism Nationalism
nationalism, militarism, imperialism, and the alliance system
Nationalism, Militarism, Allies and Imperialism
nationalism, militarism, imperialism and the alliance system
Imperialism, Militarism, and Entangled Alliances
Imperialism, nationalism, militarism, and the alliance system.
The three causes of the war were the assassination of Archduke Franz Ferdinand, widespread militarism and economic imperialism.
Militarism, Alliances, Imperialism, and Nationalism.