Tensions in Europe before world 1 were mostly increased by?

Tensions in Europe before World War I were primarily fueled by nationalism, militarism, and imperial rivalries. Nations competed for colonies and resources, leading to conflicts over territories, particularly in Africa and the Balkans. The complex web of alliances, such as the Triple Entente and the Triple Alliance, further escalated these tensions, as countries were drawn into conflicts to support their allies. Additionally, the assassination of Archduke Franz Ferdinand in 1914 acted as a catalyst, triggering the war amidst the already volatile atmosphere.