What are some interesting issues in economic history?

Thank you for the invitation. Although there is basically no research on economic history. But can I lend your master's hand to answer the questions in my heart?

1. What impact did the economic exchanges between the Central Plains dynasties and nomadic peoples have on the evolution of history?

2. Did the historical tribute system promote the prosperity of international trade? Or, as the mainstream sees it, it has always been a deformed system that takes advantage of others.

3. Why has China, which has long occupied an important economic position in the world and is peaceful and stable, been unable to complete capitalism and form commercial law. But it was the war-torn Europe that gave birth to capitalism.

4. The economic impact of Wang Anshi’s reform.

5. Explain the opposition between the old and new factions of the Thirty Years War from an economic perspective.

6. Economic problems and their impacts in many reforms during the Spring and Autumn Period and the Warring States Period.

7. The pros and cons of the salt and iron monopoly system.

9. Economic factors behind China’s historical cycle.

10. Development and analysis of China’s tax system. .

11. Development and analysis of European and American tax systems.

12. Analysis of changes in national economic policies in modern history, from mercantilism to state capitalism. and its impact.

13. The economic pros and cons of China’s aid policy in Africa.

14. The impact of the current situation in the Middle East on the world economy.

15. How to solve the Soviet Union’s economic dilemma during the Cold War.

16. The economic reasons behind the prevalence of Japanese and Chinese pirates in the Ming Dynasty.