What are the negative effects of European alliances?

European alliances, particularly during the early 20th century, often led to heightened tensions and militarization, creating an environment ripe for conflict, as seen in World War I. These alliances could also result in entanglements that forced countries into wars due to obligations to defend allies, even when national interests did not align. Additionally, they sometimes fostered an atmosphere of distrust and competition among nations, undermining diplomatic relations and peaceful resolutions to disputes.