Based on historical context and Kaiser Wilhelm II's speeches around the time leading up to World War I, he believed that the crisis that led to war was primarily influenced by the tensions and rivalries in Europe, particularly regarding France and its alliances. However, if we are specifically linking to his speeches, he often pointed towards external conflicts and incidents that he felt escalated tensions, such as the Moroccan Crisis. Given your options, the most accurate response would be:
the Moroccan Crisis of 1911.