Summarize the background of the implementation of the maritime ban policy in the early Ming Dynasty. On the reasons for the adjustment of the maritime ban policy in the middle and late Ming Dynasty ..

Summarize the background of the implementation of the maritime ban policy in the early Ming Dynasty. On the reasons for the adjustment of the maritime ban policy in the middle and late Ming Dynasty ... (1) Background: The remnants of hostile forces in the Ming Dynasty used the sea to continue their confrontation; The invasion of Japanese pirates and the collusion between pirates and coastal criminals; Natural economy, the ruler (Zhu Yuanzhang) despised overseas countries. (4 points)

(2) reason: hostile forces are dying out; Affect the livelihood of coastal people; The policy of prohibition is out of date.

Impact: the opening of the ban promoted the development of maritime trade; Conducive to the livelihood of coastal people, overseas migration; Accelerate the inflow of silver and promote institutional changes. (8 points)