Why did Japan launch a war of aggression against China?

Japan launched the war of aggression against China for the following reasons:

1, Japan has had the ambition to annex East Asia since Toyotomi Hideyoshi's time.

2, the domestic economic collapse, there is a strong demand to pass on contradictions.

Due to the demand of domestic economic development for raw materials and cheap labor, China has many low-cost resources and labor, and has also opened up overseas markets; After Meiji Restoration, although Japan got rid of its status as a semi-colonial and semi-feudal country, it embarked on the road of militarism, practiced fascist dictatorship and invaded China.

It was during the worldwide economic crisis. Political, economic, military and social aspects of all countries in the world have been negatively affected to varying degrees, which is more obvious for capitalist countries based on economy and commerce. Then, for this reason, the intensification of domestic contradictions will inevitably lead to social and political turmoil. In this case, there are two ways before the government.

First, solve the contradictions within the country, which Roosevelt adopted, and I won't go into details.

Second, the best way is to pass on the crisis and wage war.

On the one hand, it can stimulate industrial development, increase employment opportunities and stabilize this situation. On the other hand, it can obtain huge war reparations and ease the economic crisis. Both Germany and Japan have adopted this method.

3. The ambition of militarism to dominate the world.

4. China is poor and weak, with a vast territory and abundant resources, which brings great material temptations to Japan.

5. The demise of the Song and Ming Dynasties among ethnic minorities caused the collapse of China's lofty image of China. China was ruled by Yuan and Qing minorities, which made Japanese feel more qualified and capable to rule China.

6. The defeat of the Qing Dynasty in the Sino-Japanese War of 1894-1895 showed Japan that China could be defeated.