Teacher:This task is about reading the given passage and construct a question about the information present in the passage. Construct a question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) its answer is a continuous text span from the paragraph. Avoid creating questions that (i) can be answered correctly without actually understanding the paragraph and (ii) uses same words or phrases given in the passage.
Teacher: Now, understand the problem? Solve this instance: Some scholars note that Tibetan leaders during the Ming frequently engaged in civil war and conducted their own foreign diplomacy with neighboring states such as Nepal. Some scholars underscore the commercial aspect of the Ming-Tibetan relationship, noting the Ming dynasty's shortage of horses for warfare and thus the importance of the horse trade with Tibet. Others argue that the significant religious nature of the relationship of the Ming court with Tibetan lamas is underrepresented in modern scholarship. In hopes of reviving the unique relationship of the earlier Mongol leader Kublai Khan (r. 1260–1294) and his spiritual superior Drogön Chögyal Phagpa (1235–1280) of the Sakya school of Tibetan Buddhism, the Yongle Emperor (r. 1402–1424) made a concerted effort to build a secular and religious alliance with Deshin Shekpa (1384–1415), the Karmapa of the Karma Kagyu school. However, the Yongle Emperor's attempts were unsuccessful.
Student:
What important trade did the Ming Dynasty have with Tibet?