IB History Impact of Japanese Occupation of Manchuria Notes

The Mukden Incident: Japan Seizes Manchuria

1. On the night of 18 September 1931, officers of the Japanese Kwantung Army blew up a section of the South Manchuria Railway near Mukden (modern Shenyang).
2. They blamed Chinese saboteurs and used the incident as a pretext to seize the entire Manchurian region, an area larger than France and Germany combined.
3. The Japanese government in Tokyo had not ordered the attack.
4. The Kwantung Army acted on its own initiative.
5. Within five months, Japanese forces controlled all three Manchurian provinces.
6. In March 1932, Japan established the puppet state of Manchukuo under the former Qing emperor Puyi.
7. Puyi had no real authority.
8. Japanese advisors controlled every significant decision.
9. Manchukuo gave Japan direct access to Manchuria's coal, iron, and agricultural resources, and a territorial base for further expansion into China.

International Response: Lytton Commission and League Failure

1. China appealed to the League of Nations.
2. The League sent the Lytton Commission to investigate.
3. Its report, published in October 1932, concluded that Japan's actions could not be justified as legitimate self-defence and that Manchukuo did not represent genuine independence.
4. The report recommended that Manchuria be returned to Chinese sovereignty under an international supervisory regime.
5. Japan rejected the report and withdrew from the League in March 1933. The League took no further action. No member state was willing to impose sanctions or use force. The Manchurian crisis demonstrated that the League could investigate but not enforce.
6. The domestic political impact in China was severe.
7. Jiang's non-resistance policy outraged students, workers, and military officers.
8. Demonstrations erupted in major cities demanding war against Japan.
9. The Northeast Army whose commander Zhang Xueliang had been ordered to withdraw without fighting, became a source of growing resentment.

1. The CCP seized the propaganda opportunity.
2. Mao Zedong and CCP leaders called openly for resistance to Japan, positioning themselves as the true patriots.
3. In the Yan'an base area, the CCP contrasted its willingness to fight Japan with the GMD's capitulation, a comparison that resonated increasingly with Chinese public opinion through the 1930s.
4. Comparative judgement: The final judgement must weigh political legitimacy, organisation, social policy, military conditions and Japanese intervention.
5. Nationalist and Communist synthesis 2: Compare military power with counterargument to determine which better explains impact of japanese occupation of manchuria (1931).
6. Comparative judgement: The final judgement must weigh political legitimacy, organisation, social policy, military conditions and Japanese intervention.
7. Nationalist and Communist synthesis 3: Compare internal tension with political organisation to determine which better explains impact of japanese occupation of manchuria (1931).
8. Comparative judgement: The final judgement must weigh political legitimacy, organisation, social policy, military conditions and Japanese intervention.
9. Nationalist and Communist synthesis 4: Compare long-term consequence with social mobilisation to determine which better explains impact of japanese occupation of manchuria (1931).
10. Comparative judgement: The final judgement must weigh political legitimacy, organisation, social policy, military conditions and Japanese intervention.
11. Nationalist and Communist synthesis 5: Compare perspectives with turning point to determine which better explains impact of japanese occupation of manchuria (1931).
12. Comparative judgement: The final judgement must weigh political legitimacy, organisation, social policy, military conditions and Japanese intervention.
13. Section judgement: Evidence about Comparative judgement: The final judgement must weigh political legitimacy, organisation, social policy shows why International Response: Lytton Commission and League Failure must be assessed through changing power, implementation and opposition rather than a single stated aim.
14. Nationalist and Communist synthesis 7: Compare military power with counterargument to determine which better explains impact of japanese occupation of manchuria (1931).

Japanese occupation of Manchuria: Evidence, Outcomes, and Limits

1. The Mukden Incident occurred on 18 September 1931.
2. Kwantung Army officers blamed Chinese forces for a small explosion near the South Manchurian Railway.
3. The Japanese military expanded without full civilian approval.
4. Its units rapidly occupied major Manchurian cities and transport routes.
5. Chinese forces offered limited organised resistance.
6. Zhang Xueliang withdrew many troops, while Jiang Jieshi prioritised preserving forces and fighting the CCP.
7. Japan created Manchukuo in 1932.
8. The new state claimed independence but depended on Japanese military and administrative power.
9. Puyi became chief executive and later emperor.
10. His presence gave the regime a dynastic symbol without independent authority.
11. Manchuria supplied strategic resources.
12. Coal, iron, land, railways, and industry supported Japanese continental expansion.
13. Colonial development transformed the region.
14. Railway cities, mines, heavy industry, migration, and state planning expanded under coercive rule.
15. Chinese communities experienced occupation unevenly.
16. Some officials and businesspeople collaborated, while guerrillas and volunteer armies resisted.
17. China appealed to the League of Nations.
18. The government hoped collective security would reverse aggression without a wider war.
19. The Lytton Commission investigated slowly.
20. Its report rejected Manchukuo's genuine independence but did not produce military or economic enforcement.
21. Japan left the League in 1933.
22. Withdrawal exposed the organisation's inability to restrain a major power.
23. The Tanggu Truce created a demilitarised zone.
24. The 1933 agreement consolidated Japan's gains and restricted Chinese forces south of the Great Wall.
25. The occupation intensified Chinese nationalism.
26. Students and activists criticised both Japanese aggression and Jiang's policy of internal pacification.
27. Manchuria became a base for further invasion.
28. Japanese forces used the region to pressure north China and launch full-scale war in 1937.
29. The crisis weakened faith in collective security.
30. Governments elsewhere saw that condemnation without enforcement did not reverse territorial conquest.

Evaluating the Manchurian Crisis

1. Immediate pretext and deeper causes: The Mukden Incident occurred on 18 September 1931.
2. The Japanese military expanded without full civilian approval.
3. The Mukden Incident provided a pretext, while Japanese military autonomy, strategic resources, and Chinese weakness explain the scale of occupation.
4. Political organisation: Chinese forces offered limited organised resistance.
5. Japan created Manchukuo in 1932.
6. Manchukuo gave conquest an administrative facade, but it depended on Japanese military force and officials.
7. Military power: Puyi became chief executive and later emperor.
8. Manchuria supplied strategic resources.
9. Strategic and military power mattered more than Puyi's nominal legitimacy in sustaining Japanese control.
10. Social mobilisation: Colonial development transformed the region.
11. Chinese communities experienced occupation unevenly.
12. The occupation of Manchuria changed the balance between domestic consolidation and resistance to Japan. Jiang's government faced pressure to defend sovereignty while still prioritising campaigns against the CCP.
13. Japan's creation of Manchukuo converted military seizure into a claim of political legitimacy. The use of Puyi did not conceal the decisive role of the Kwantung Army or the limits placed on Chinese authority.
14. The League's response demonstrated the weakness of collective security. The Lytton Commission rejected the legitimacy of the conquest, but delay and the absence of enforcement allowed Japan to retain its gains.
15. Domestic criticism grew because non-resistance appeared to confirm that the Nanjing government could not protect the nation. Students and political rivals used Manchuria to challenge Jiang's priorities.
16. The crisis was not simply a failure of one leader. China's military fragmentation, Japan's regional strength, and the reluctance of outside powers to impose costs sharply restricted the government's choices.
17. Its significance was cumulative. Manchuria strengthened Japanese resources, damaged GMD legitimacy, and intensified the pressure that eventually produced a broader united front against invasion.

Impact of Japanese occupation of Manchuria: Evidence Connections and Paper 3 Judgements

1. Evidence concerning the Mukden Incident shows that the Mukden Incident provided a pretext for rapid Japanese expansion. This supports the judgement that manufactured crisis enabled military action without effective Chinese consent.
2. The role of the Kwantung Army demonstrates that Manchukuo gave occupation the appearance of separate statehood. This makes it harder to claim that military power operated without propaganda.
3. Evidence concerning Manchukuo is significant because the League of Nations condemned the seizure but failed to reverse it. It also indicates that collective security lacked enforcement against a determined regional power.
4. A causal link runs through the Lytton Commission: Jiang’s policy of limited resistance prioritised internal consolidation. This weakens interpretations that argue that non-resistance carried no domestic political cost.
5. The limits surrounding Guomindang non-resistance reveal that Manchurian industry and resources strengthened Japan’s continental position. Its wider significance is that occupation altered the regional balance of economic and military power.