1840- 1940 how did the development of China's history promote the social changes in China?

1840- 19 12. The dual exploitation of foreign empires and feudal rulers led to the demise of the feudal system.

19 12- 1945, during the Republic of China, the bourgeois revolution, but the subsequent warlord scuffle (with the nature of feudal landlords) and the support of the imperial power behind it proved the fragility of the bourgeois revolution, and the society will not be like this tomorrow. This is also one of the reasons for Sun Yat-sen's new exploration of the New Three People's Principles and cooperation between countries.

19 16? -China * * * Under the leadership of the Producer Party, the new-democratic revolution united all possible possibilities and strategies to win the new-democratic revolution. So far, it has been proved that the shoulders of the * * * production party are hard enough to bear the country's mess, get rid of foreign devils and slaves, end social unrest and enter the next stage of social reform.