The correct answer is "D".
The "First Moroccan Crisis" was one of the events that led to the outbreak of the First World War in 1914. This event occurred in 1905 when diplomatic relations between Germany and France deteriorated as a result of the arrival of Kaiser Wilhelm II of Germany to Morocco. He claimed he had come to support the sovereignty of Sultan Abdelaziz of Morocco. This was taken as a direct challenge by the French, as the Sultan would reject French proposed governmental reforms.