The one that must approve tribal constitution is: D. The US Secretary of the Interior
Tribal constitution refers to the regulations that is made to manage the relationship between untied states government with the natives american tribes. US secretary of the interior played a very crucial role in this relationship because they are the one that managed the division of Federal owned land, including those that subsidized to the tribes.
if you notice the last part of it says something about silk and porcelain and at that time china was the manufacturer in that particular type of goods.