Which of the following timelines identifies the cause of aggression and conflicts that led to the nauseating in China and contributed to the beginning of World War II

Answer 1

1. 1919: Treaty of Versailles imposes harsh penalties on Germany, leading to economic hardship and resentment
2. 1931: Japan invades Manchuria, sparking international condemnation and increasing tensions in the region
3. 1937: Marco Polo Bridge Incident leads to full-scale invasion of China by Japan
4. 1939: Hitler invades Poland, sparking the beginning of World War II.