What did the triple entente ruin the schlieffen plan?

The Schlieffen Plan aimed for a quick victory for Germany by invading France through Belgium before turning to fight Russia. However, the Triple Entente, comprising France, Russia, and the United Kingdom, coordinated their responses effectively. Russia mobilized faster than anticipated, forcing Germany to divert troops to the Eastern Front, while British intervention in Belgium galvanized opposition and delayed the German advance into France. This ultimately contributed to the failure of the Schlieffen Plan and prolonged World War I.