Analysis of test questions: This question is an easy one to examine the local history of Jiangsu and Zhejiang provinces. In the Yuan Dynasty, Jiangsu and Zhejiang provinces were established, and item A was incorrect; The cultural center of China in the Ming and Qing Dynasties was Beijing, and item B was incorrect; The symbol of the beginning of China's modernization is the Westernization Movement, not treaty of nanking. Item c is incorrect. The symbol of the birth of modern democracy in China is the establishment of the Republic of China, and item D is correct.