The southern Mudchourine railway zone and the Korean peninsula had already been under the control of the Japanese Empire since the Russo-Japanese War of 1904-1905. Japan`s increasing industrialization and militarization have ensured its growing dependence on oil and metal imports from the United States.  U.S. sanctions that prevented trade with the United States (which had occupied the Philippines at about the same time) led Japan to promote its expansion into China and Southeast Asia.  The invasion is sometimes cited as an alternative departure date for World War II, contrary to what was commonly accepted in September 1939.  Thus, in 1933, the League failed to protect China from aggression, to defeat the Conference on Disarmament and to withdraw Japan and Germany. It was also the collapse of another major company, the World Economic Conference of June 1933. From the beginning, the League had placed great importance on the work of its economic and financial organization. Its first major conference on this subject (Brussels, June 1920) had indeed been preceded by the first assembly. He then followed an upward curve for several years. After taking an important part in restoring some stability of European currencies, it turned to deeper economic problems.
The first world economic conference, held in 1927, concluded with a unanimous report describing the need for freer and broader international trade, the obstacles that hinder it, and the measures needed to achieve that trade. Over the next two years, great progress has been made in implementing its recommendations. But all this failed because of the economic storm, when each country tried to protect its own economy through tariffs, quotas and bans. Plans and conventions drawn up in Geneva, including Briand`s plan for the United States of Europe, were swept away. The conference ended in a rapid and almost complete failure. After fleeing Mukden, the Liaoning provincial government was replaced by a Peoples Preservation Committee that declared the secession of Liaoning Province from the Republic of China. Other secessionist movements were organized in Kirin, occupied by Japan, by General Xi Qia, head of the “New Kirin” army, and in Harbin by General Chang Ching-hui. In early October, General Zhang Haipeng said in Taonan, in the northwestern province of Liaoning, that his district was independent of China in exchange for a large number of military deliveries by the Japanese military.
Western media reported on events of atrocities such as the bombing of civilians or the shooting of shocked survivors.  It aroused considerable antipathy towards Japan, which lasted until the end of World War II.  In the final years of the war, when Allied leaders began to develop plans for the future international organization, they rejected any idea of reviving the Alliance.