1, the bondage of decadent feudal system is the fundamental reason for the slow development of capitalism.

2. Ownership: The multi-ownership economy with public ownership as the main body develops together.

3. The Japanese emperor's government vigorously developed militarism and formulated a "mainland policy" centered on conquering China. Conquering Korea is the first step to conquer China. 1876, North Korea was forced to sign the Jianghua Treaty. 19 10, Japan forced North Korea to sign the Japan-South Korea merger treaty and formally annexed North Korea. 1894 Japan provoked the Sino-Japanese War in the Sino-Japanese War and drove Russian troops out of northeast China.

4. China's foreign trade in ancient times was a tribute trade between the government and foreign countries, and its purpose was not to obtain the greatest economic benefits, but mainly to strengthen friendly exchanges. The government often follows the principle of "paying more attention to details" and adopts the method of "paying more", which increases the heavy financial burden in trade and affects the sustainable development of Chinese and foreign trade.

5. After the Qin Dynasty unified China, it adopted the legalist thought and established the centralization of feudal autocracy.