Answer:
varied
Step-by-step explanation:
The degree to which the emperors of the Yuan dynasty pursued a closed- or an open-door policy varied. While some emperors advocated for a more open-door policy to encourage trade and cultural exchange with other nations, others pursued a more closed-door policy to maintain control over their empire and prevent foreign influence. Overall, the Yuan dynasty adopted an open-door policy to some extent, particularly during the earlier part of the dynasty when it actively sought to establish tributary relationships with neighboring countries and expand its diplomatic relations.