Was a growing sense of isolationism among European nations a causes of World War 1?

Yes, a growing sense of isolationism among European nations contributed to the tensions that led to World War I. As countries like Germany, France, and Britain focused on national interests and internal issues, they became less willing to engage in diplomatic negotiations and more inclined to rely on military alliances. This isolationist sentiment exacerbated existing rivalries and made it difficult to resolve conflicts peacefully, ultimately contributing to the outbreak of war in 1914.